1.tell 告诉，说；辨别；吩咐；断定；讲述；告发，泄密；识别

例句：It was already impossible to tell where the bullet had entered.
已经不可能判断子弹是从哪里射进来的。

2.kidding 开玩笑；欺骗

例句：You've got to be kidding! I can't live here!
你一定是在开玩笑！我不能住这儿！
3.sit down 坐下；扎营

例句：They should sit down to talk out their differences.
他们应该坐下来通过商谈来消除他们之间的分歧。

4.hammer out 设计出；锤成；苦心想出；弹奏出

例句：I think we can hammer out a solution.
我想我们能够制定出一个解决方案。