英汉词典

1. (某事件或状态的)持续时间,期间
    The duration of an event or state is the time during which it happens or exists.

    e.g. He was given the task of protecting her for the duration of the trial...
           他的任务是在审讯期间保护她。
    e.g. Courses are of two years' duration.
           课程为期两年。

2. 直到…结束;在整个…期间
    If you say that something will happen for the duration, you mean that it will happen for as long as a particular situation continues.

    e.g. His wounds knocked him out of combat for the duration.
           他的伤病使他在整个期间都无法参赛。