Wheneyen.想当年
whenadv.什么时候;当 ... 时conj.然后;可是;当 ... 时pron.什么时候n.时间
When is the Teacher's Day?
When will daddy come home?
When did the theft happen?
When will this rain letup?
When does this rule apply?
When is the store closing?这家店什么时候结束营业?
When was he pensioned off?
When will she return home?
When did your site launch?
When a thread calls Suspend.来暂停线程。