提前发出的洪水水位上涨警报防止了又一次的重大灾害。
Early warnings of rising water levels prevented another major catastrophe.
我要在公众面前发表演讲。
就在不久前发生了这样的事。
项目必须在5月3日前发送。
他告诉他们风筝是中国在2000多年前发明的。
He told them that kites were invented in China more than 2,000 years ago.
我的目标是在一年内减掉150磅，并筹集5万美元来支持30年前发起的一项旨在消除饥饿的运动。
My goal was to lose 150 pounds in one year and raise $50,000 in support of a movement founded 30 years ago to end hunger.
一项新的研究发现，大多数三岁的孩子都能记得很多一年前发生在他们身上的事情，在他们5岁到6岁的时候，这些记忆仍然清晰，但当他们超过7岁时，这些记忆就会迅速变弱。
A new study has found that most three-year-old children can remember a lot of what happened to them a year earlier, and these memories are still clear while they are 5 and 6, but by the time they are over 7, these memories become weaker rapidly.
事实是，这男孩对先前发生的变化心怀怨恨和愤愤不平。
The truth was that the boy was terribly embittered and angry by the changes that had come.
这条八英里长的道路比任何之前发现的道路至少要早500年。
The eight-mile road is at least 500 years older than any previously discovered road.
这个故事中，证人席上的那个女人正被问及一百年前发生的谋杀案。
The woman on the witness stand in this story is being questioned about the murder that was committed one hundred years ago.
世界卫生组织表示，目前发展中国家体重超标的儿童数量急剧增加。
The World Health Organization says there has been a sharp increase in the number of children in developing countries who weigh too much.
我喜欢在公众面前发言，和人们相处得很好，所以我觉得取得胜利很容易。
I enjoyed speaking in public and got along well with people, so I felt it easy to win.
自四周前发布到网上以来，这位歌手的音乐视频已经被浏览了近900万次。
The singer's music video has been viewed nearly 9 million times since it was posted on the Internet four weeks ago.
它们是推动经济向前发展的科学发现的场所，是培养获得和保持竞争优势所需人才的主要手段。
They are the place of the scientific discoveries that move economies forward, and the primary means of educating the talent required to obtain and maintain competitive advantage.
在1963年，芬兰议会做出了一个大胆的决定：选择公共教育作为推动经济向前发展和走出经济衰退的最佳手段。
In 1963, the Finnish Parliament made the bold decision to choose public education as the best means of driving the economy forward and out of recession.
茶叶于5000年前发现于中国。
这以前发生过，而我幸存了下来。
然后她提醒我几个月前发生的一件事。
She then reminded me of something which happened a few months ago.
我不敢在全班面前发表演讲。
I don't have the guts to make a speech in front of the whole class.
这就是65年前发生的事。
这以前发生过一次，哦，是很多年以前。
股东们轮流站在麦克风前发表他们的意见。
Shareholders took turns at the microphone to offer testimonials.
你难道不是对当前发生的所有事的观察者吗？
Aren't you just the still watcher of everything that's going on?
然而，以前发生过手机爆炸用户受伤的事件。
However, there have been cases when users sustained injuries as phones exploded.
我想大概是几周前发表的，我将其列在大纲中。
Well actually, I guess it came out a couple of weeks ago, but it's up on our syllabus.
这是碰撞前发生的。
6个月前发布了SilverLight2。
你能够在性能瓶颈没有破坏你的计划之前发现它。
And you can discover performance bottlenecks when you can still address them without destroying your schedule — or creating panic on the eve of delivery.
激光器是在50年前发明出来的，如今已相当常见。
Since they were invented 50 years ago, lasers have become extraordinarily commonplace.
激光器是在50年前发明出来的，如今已相当常见。
Since they were invented 50 years ago, lasers have become extraordinarily commonplace.
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