1. They are shrewd businessmen who keep their eyes peeled for every economic smoke signal. 
   他们是精明的生意人，对每一个经济征兆都极为注意。
2. This is the light which you use to signal to pedestrian that you are going to turn right. 
   这个车灯用来告诉行人你要向右拐弯了。
3. Who are you calling? 
   你要电话给谁？
4. Who are you phoning? 
   你给谁打电话呢？
5. Who are you with? 
   你为谁效力？

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