大流行波可时断时续，持续数月，立即发出“平安”信号可能为时过早。

Pandemic waves can be separated by months and an immediate “at-ease” signal may be premature.

youdao

大流行波可时断时续，持续数月，立即发出“平安”信号可能为时过早。

Pandemic waves can be separated by months and an immediate “at-ease” signal may be premature.

youdao