重点讲解：
1. dare to do sth.
敢做某事；
eg. Since he was stuck in a lift a year ago he hasn't dared to get back into one.
自从一年前被困在电梯里之后，他就再也没敢乘过电梯。
eg. He has also dared to take unpopular, but principled stands at times.
他有时也会大胆坚持不受欢迎、但却有原则性的立场。
2. in the face of
面对；在…面前；
eg. We should compose ourselves in the face of fear.
我们在危险时要保持镇静。
eg. In the face of difficulties, he's completely unafraid.
他在困难面前毫不怯懦。
3. give birth to
使产生；使诞生；
eg. In 1980, strikes at the Lenin Shipyards gave birth to the Solidarity trade union.
1980年，列宁造船厂的罢工致使团结工会得以成立。
eg. Heavy traffic lives to townsman of quality carried high yield to give birth to negative effect.
交通拥挤对于城市居民生活质量的提高产生了负影响。
4. waste time (in) doing sth.
浪费时间做某事；
eg. Life is too short to waste time hating anyone.
生命短暂，所以不要把时间浪费在憎恨别人上面，
eg. There could be many reasons and he was not going to waste time speculating on them.
原因可能有很多，他不打算浪费时间对此妄加猜测。