表“阶段”他们是同义词.相互可以通用,period比stage,phase常用,强调一段时间.
Negotiations were at a crucial stage.
谈判正处于一个关键的阶段.
The child is going through a difficult phase.
那孩子正经历困难的阶段.
She'll be away for an indefinite period.
她将离开一段时间,何时回来未定.
It was a period of innovation.
这是革新时期.