动词短语
中文翻译：来去无常
同义词：
['fade in and out', 'come and go']
例句：
-
1.The business is coming and going like a wave.
这个生意像波浪一样时起时落。
-
2.He came and went all day without leaving a trace.
他整天来来去去，没有留下任何痕迹。
-
3. The weather was coming and going between sunny and rainy.
天气一会儿晴一会儿雨，变化无常。