it couldn't be used then

问题描述:

it couldn't be used then

意为 “随后,然后,当时”
这里指“当时”
整句翻译:
当时还不能使用它
例句:
Liverpool had five theatres then.
利物浦当时有五座剧院.
They will be dead by then.
那时他们早已不在人世了.