According to the passage what is the meaning of the phrase "ups and downs" in the fifth s

外语类 公共英语 已帮助 人

According to the passage, what is the meaning of the phrase "ups and downs" in the fifth sentence of paragraph two?

A.Good and bad experiences.

B.The movement of going up and down.

C.Conflicts.

D.Happiness.

热搜:medline数据库中to字段是表示非英文文献的原文题名