Definition: the amount of time something takes Level: B2
这堂课的长度是50分钟。
The ___length of the lesson was 50 minutes.
他无法集中精力工作任何一段时间。
He is unable to concentrate on his work for any ___length of time.
我们需要您在晚上7点开始演讲，时长为一小时。
We will need you to start the talk at 7:00 p.m. with a ___length of one hour.
