我从两个层面给你分析：
第一层：从表达上。该句在词法、句法和结构上都没有任何问题，是正确的表达。
第二层：从内容上。该句翻译为中文是：木乃伊一度被认为在某些疾病上有医疗效果。从现有的医学资料，尚无法得出这样的结论。综合现有的医学和其它相关学科知识，木乃伊在某些疾病上有医疗效果是不可能的，也是荒唐的。木乃伊一度被认为在某些疾病上有医疗效果这一说法曾经在国外，尤其是中东地区的某些盛行巫医的地方存在过。
起床是早上第二件最困难的事情。（第一为睁眼O(∩_∩)O~）
最精良、最集中健身中心设在布拉格. 在市中心靠近振,你会发现这天健身活力. 两层的功能和重量训练、演习课、私人泳池和放松区,干蒸房. 同时:按摩、个人培训,Solarium
电话号码是0832-5566327. 这是公共汽车站附近. 你可以在这里获得第五号巴士. 有不少班级和游泳池. 有很多经营权、机器设备. 有三. 这是太好了. 有很多雨. 体育课是在上午六时至晚上十一时开放,星期一至星期五,每天早上七时至8:00时,星期六及星期日. 欢迎你加入我们的行列.
(1) 中国大使馆驳回你的文件，因为文件含有《台湾》地名;
(2) 中国大使馆不会接受含有《台湾,香港》地名的文件!
(3) 我联络上公证官，他说他可以用"修正液"除去《台湾》地名,然后写上《中国》;
(4) 请让我知道你想要我如何处理那文件.
Please find attached invoice, we'll send the original invoice as soon as your comfirmation about your payment time.
英语没有那么多的客套话，一般用please，thanks 就足够了。特别是贸易英语讲究简明扼要，否则会被客人看作是不专业。
扩展
谢谢！我这英语真是头疼.... 还请帮忙修改一下下面的句子，谢谢！
Attached pls find the documents for your ref.
Pls help copy and sent the email to Lucy，because I don’t know her email address.Thanks
请查收附件文档供你参考。 因为我没有Lucy的邮箱地址，请帮忙将此邮件抄送给她。谢谢！
补充
Attached pls find the files for your reference. Please copy this mail to Lucy as I don't know her email address,
来自：求助得到的回答
我将会在2013年七月九日联系联想公司，在确认他们已经取消了厂方订单后，让他们取消你在亚马逊支付账户上的订单。在和联想商谈取消订单之后，我会马上跟进，将最新消息发电邮给你。
（就是说7月9号他要先联系联想，让那边确认已经取消订单了，然后让联想取消你亚马逊的订单。如果有任何更新都会发邮件告诉你）
I know just how to whisper
- 我知道怎么诉说
And I know just how to cry
- 我也知道如何哭出来
I know just where to find the answers
- 我知道何处去寻找那结果
and I know just how to lie
- 我也知道骗人的愉快
I know just how to take it
- 我知道怎样承受
And I know just how to scheme
- 我也知道怎样搞诡计
I know just when to face the truth
- 我知道何时去面对现实
And then I know just when to dream
- 也知道何时要躲进梦里
And I know just where to touch you
- 我知道要如何去抚摸
And I know just what to prove
- 我知道要保证些什么
I know when to pull you closer
- 我知道何时去占有
And I know when to let you loose
- 也知道何时让你自由
And I know the night is fading
- 我知道此夜即将结束
And I know the time's gonna fly
- 我知道时间也在狂飞
And I'm never gonna tell you everything I gotta tell you
- 我没有办法告诉你我的全部心声
But I know I gotta give it a try
- 可我知道我要尽力而为
And I know the roads to riches
- 我知道致富的道路
And I know the ways to fame
- 我也知道成名的法术
I know all the rules and I know how to break them
- 我知道所有规则也懂得如何去钻空子
And I always know the name of the game
- 以及知道这游戏的名字
But I don't know how to leave you
- 可我不知怎样能离开你
And I will never let you fall
- 我永远不让你失望
And I don't know how you do it
- 我也不知道你是如何
Making love out of nothing at all
- 去付出不需回报的爱
(Making love) out of nothing at all
- （去付出）不需回报的爱
(Making love) out of nothing at all
(Making love) out of nothing at all
... ...
Everytime I see you
- 每当我看到你
All the rays of the sun are streaming through the waves in your hair
- 那些无限美好的太阳光束穿过你波浪般的秀发
And every star in the sky is taking aim at your eyes
- 你的眼睛在夜空中比星星更加光彩
like a sparklight
- 闪动着火花
The beating of my heart is a drum and it's lost
- 我心跳声响如那远古遗失的鼓锤
But it's looking for a rhythm like you
- 正在寻找着似你般永恒的旋律
You can take all the darkness from the pit of the night
- 你可以驱除深夜角落里的黑暗
And turn it into a beacon buring endlessly bright
- 再将它变成永不熄灭的灿烂辉煌
I got to follow it
- 我一定要追随
Cause everything I know it's nothing till I give it to you
- 因为如果我的一切不全给你那便是渺茫
~ Instrument ~
I can make the runner stumble
- 我能够使健跑者蹒跚
I can make the final block
- 我一定能够抵达最终
And I can make the tackle at the sound of the whistle
- 我能够在第二声哨响时就阻截对手
I can make all the standiums rock
- 我能够使全场观众为我癫疯
I can make tonight forever
- 我能够让今夜永恒
Or I can make it disappear by the dawn
- 或者让它在破晓时消亡
I can make you every promise that has ever been made
- 我能够实现一切曾经许下的海枯石烂
And I can make all your demonse gone
- 也能够让你周围的鬼神离开
But I'm never gonna make it without you
- 但是如果没有你我永远都不会成功
Do you really wanna see me crawl
- 你当真想要我这样跪在地上吗
And I'm never gonna make it like you do
- 那我永远也达不到你的要求
Making love out of nothing at all
- 去付出不需回报的爱
参考资料：http://www.hellovv.com/cgi-bin/printpage.cgi?forum=9&topic=10
早上好！欢迎来到新华职业学校。我的名字叫李雷。我是这学校的新生。我非常高兴今天能够见到你们。瞧，这就是我们学校的教学楼。里面有60间教室，18个实验室和许多教师办公室。我们的教室在3楼。既明亮又宽敞。我们班有50人。那栋楼是学校图书馆。是新建的。里面有很多书。图书馆有4间阅览室。下课后，我们可以到阅览室里阅读和学习。你看见图书馆旁边那栋红色的大楼了吗？那是学生宿舍。里面有一个大食堂和许多间寝室。现在就让我们去学校的操场看看。请走这边。我们到了。每天下课之后，都有许多学生在这里打篮球、踢足球。我们学校非常棒。我们爱我们的学校。我们一起在这里努力学习。好了，谢谢你的来访。下次见！
1.He was startled by the sound of the back door opening in the dead of night.
他被深夜传来的开后门的声音吓到了
2.There is nothing serious about the damage;it is a mere scratch(划痕)on the door of the car.
车基本上没什么损坏，只是车门上有几处轻微划痕
3.Mom was singing a lullaby to my baby sister while rocking the cradle with a gentle backwards and forwards motion.
妈妈给我的小妹妹唱摇篮曲，并且轻轻的前后摇动摇篮
4.thense and hot,we were relly sweating as we waited for them to announce the results.
热死了，我们等他们宣告结果等的大汗淋漓
5.He sat leaning against the back of the seat with his legs stretch out straight in front of him
他斜靠着后座坐着，把腿伸直
6.She's one of those habitually vain people who keep glancing at themselves in the mirror when they think no one's looking.
她是那种爱慕虚荣的人，他们觉得没人看着他们的时候总是爱照镜子
7.Mike is an extremely careless man.On one occasion,it was not until he got to an ATM that it occurred to him he had left his card at home.
麦克很粗心，不到取款机前就不会记得自己把银行卡忘家里了
9.Stan tends to be driven by hisemoxions--he rarely considers the consequences of his actions
斯坦故意带着情绪驾驶，他应该为自己的行为负责
10.She ought to be thoroughly ashamed of herself for talking to her guests in such a rude way
他应该为她对客户那么粗鲁的谈话 非常的难为情
11.In my mind's eye,she remains a little girl of six although she's actually a grown woman now.
在我眼里她还是一个6岁的小女孩，但显然她现在已经是一个亭亭玉立的女人了
12.He had tried to put the unpleasant scene out of his mind,but it kept on recurring to him,especially in dreams.
他试图忘记那些不愉快的场景，但是那些场景又会回到他的脑子，尤其在梦里