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重点讲解：
1. spare no effort to do sth. 不遗余力；不惜工本；
We will spare no effort to find the culprit of this crime.
我们会竭尽全力追查本案的凶犯。
2. die of 死于；
And despite heart disease and cancer, most Americans die of natural causes.
扣除心脏病和癌症，大多数美国人是自然死亡的。
3. in face of 面临；
They didn't give up in face of difficulties.
面对困难，他们没有放弃。
4. take part in 参加；参与；
His toes are hurt and he is unable to take part in today's basketball game.
因脚指受伤，他不能参加今天的篮球赛了。
adj. 严格的，精确的，完全的
