高手翻译几个汉译英句子！不要中式英文，谢了！

Question

请适当的注释一下，括号内的关键是我重点不懂的地方，请注释！谢了！
以下为句子：
总经理正式宣布这个项目开工。（关键：“正式”如何表达？）
尽管这件事已经被隐瞒了很多年了，但最终还是被他知道了。
炎热的天气让我无法专心复习。（关键：“专心复习”如何翻译）
我担心考试可能会及不了格。（关键：“及不了格”？）
我一直在打瞌睡，我想我需要睡一段时间。（关键：”打瞌睡“？）
荷兰打败巴西晋级四强。
翻译是一门深奥的学问。
天花板上有些裂痕，一些石灰已经脱落了。

Answer 1

总经理正式宣布这个项目开工 General Manager formally announced the project started. （关键：“正式”如何表达？） (Key: "formally" to express?)
尽管这件事已经被隐瞒了很多年了，但最终还是被他知道了。 Although this matter has been concealed for many years, but eventually it was he knows.
炎热的天气让我无法专心复习。 Hot weather so I can not concentrate on review. （关键：“专心复习”如何翻译） (Key: "concentrate on review" how to translate)
我担心考试可能会及不了格。 I am worried that failed the test may be. （关键：“及不了格”？） (Key: "and not cell"?)
我一直在打瞌睡，我想我需要睡一段时间。 I have been dozing off, I think I need to sleep some time. （关键：”打瞌睡“？） (Key: "asleep"?)
荷兰打败巴西晋级四强。 Semi-finals Brazil beat the Netherlands.
翻译是一门深奥的学问。 Translation is an esoteric science.
天花板上有些裂痕，一些石灰已经脱落了。 Some cracks in the ceiling, some lime has come off.

Answer 2

1.General Manager formally announced the start of this project.

formally——正式地，形式上

2.Although this matter has been concealed for many years, but eventually it was he knows.

3.The weather is too hot, and so I can not concentrate on Review
concentrate on——专心于，把思想集中于

4.I am worried that may not pass the exam 或者I am worried that failed the test may be

5.I have been dozing off, I think I need to sleep for some time
Doze——打盹儿，打瞌睡

6.Dutch team beat Brazil, and advanced to the World Cup semi-finals.

7.Translation is a profound knowledge

8.Some cracks in the ceiling, some have come off of lime

Answer 3

1.The manager formally declared the project to start.
2.He knew it finally even though the affair has been hidden for many years.
3.I can't concentrate into the review because of the hot weather.
4.I am afraid of failing the exam.
5.I want to go to sleep for a while due to the dozing.
6.Netherland beat Brazil and promoted to top four.
7.Translation is a set of profound knewledge.
8.There are gaps on the ceiling, and the ash has been fallen down.
人脑产品，呵呵
希望对楼主有帮助。本回答被提问者采纳

Answer 4

1.The general manager officially pronounced the commence of the project.
2. He finally found out the story although it was hidden many years.
3. It is too hot for me to concentrate on my lessons review.
4. The test worried me for i am afraid i may fail.
5. I am dozing off, i really need some sleep.
6. Holand beat Brizil and crowed top four.
7. Translation is a kind of profound knowldge.
8. There are some cracks on the celling with some part of the cement coating dropping off.

Answer 5

the officer declared (formally) to start this project.
he eventually knew what happened, though it had been concealed for many years.
I couldn't (concentrate myself on reviewing) in such hot weather.
I am afraid that I (couldn't pass) the exam.
I think I should go to bed for a while because I am (dozing off).
the Holand wins the Brazil and gets through to the semi-final
Interpretation is a profound knowledge.
some kalk dropped down because there are some crack in the ceiling.

参考资料：金山词霸