释义
- to keep a firm grip on
- to pay close attention to
- to lose no time in (doing sth)
相关词汇
HSK 5词频 1,323部首 一副词 · 连词
in case (sth happens)
if
once (sth happens, then...)
when
in a short time
in one day
in case (sth happens)
if
once (sth happens, then...)
when
in a short time
in one day