duration

持续时间、期间

The duration of the flight is about eleven hours.

这趟航程的持续时间大约十一个小时。

时限、效期正式

The contract specifies a duration of three years.

合约明定期限为三年。

在整个期间、从头到尾

He stayed silent for the duration of the meeting.

整场会议他从头到尾都沉默不语。