示例
A：Would you please help me bring in the washing if it rains.
B：It's a snap.
A：如果下雨的话，帮我收一下衣服好吗？
B：小事一桩。
A：How did you make it? She is such a hard nut to crack.
B：Well, it's a snap.
A：你是怎么做到的啊？她很难缠的。
B：呃，这很简单。