April weather字面意思诗四月的天气，是比喻用法，意思是"喜怒无常"、"一会儿哭，一会儿笑"。

【例句】

I cannot bear my wife, because she is always like April weather.
我不能忍受我的老婆了，因为她总是喜怒无常。

Some women are like April weather when they are pregnant.

有些女性怀孕的时候会喜怒无常。