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重点讲解：
1. put in place （法律、政策、行政体系等）正在运作，就位；
They're offended by the elaborate security measures the police have put in place.
他们被警方部署的繁复安全措施惹怒了。
2. a number of 若干；许多；
A number of houses were burnt down in the fire.
在火灾中，好些房子给烧毁了。
3. die from 死于；
A very large number die from starvation or dehydration.
有大量的鸡死于脱水和饥饿。
4. be convicted of 给…定罪；宣判…有罪；
He was convicted of murder.
他被判有谋杀罪。
adj. 威胁(性)的，凶兆的 动词threaten的现
