"come and go" in Chinese (Simplified)
来来去去
Definition
反复出现然后离开，或时有时无。通常用于形容人、情绪或情况不是一直存在。
Usage Notes (Chinese (Simplified))
常用于描述规律、潮流、天气和情感，有时带有缺乏稳定性的意味。书面和口语中都常见。
Examples
People come and go from this café all day.
人们整天在这家咖啡馆**来来去去**。
Feelings of sadness can come and go.
悲伤的感觉会**来来去去**。
Trends in fashion come and go quickly.
时尚潮流**来来去去**很快。
People come and go, but real friends stay.
人们会不断**来来去去**，但真正的朋友会留下。
His pain finally started to come and go last week.
他的疼痛上周开始渐渐**来来去去**了。
Opportunities come and go—you have to be ready.
机会**来来去去**——你要随时准备好。