讲解文本：

child's play 小儿科，非常简单的工作，轻而易举的事
Come on, this is like child's play. Even a baby can do this.
啊，这太简单了，一个baby都能搞定。
I finished the test very quickly. It was child's play!
我很快就完成了测试，太小儿科了。

疯狂练习吧！