1. For those reasons，Washington policy makers have good arguments for what they call a"forward-leaning"strategy，one that doesn't wait for something awful to hap-pen before applying armed force． 
   基于这些原因，华盛顿的政策制订者完全有理由实施他们所说的"前倾战略"，即不必等到灾难发生才动用武装力量。
2. On leave; on fire; on the way. 
   休假；着火；在途中
3. Stay on; hang on. 
   维持现状；别挂电话
4. What's on on Wednesday? 
   星期三演什么？
5. He ran on and on. 
   他不停地奔跑。

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