duration ·noun
Definition: the amount of time that something lasts Level: C1
这位歌手在他英国停留的整个期间都待在酒店里。
The singer remained in the hotel for the ___duration of his stay in the UK.
如果你年龄在18到30岁之间，我们提供各种工作，持续时间从两周到三个月不等。
If you are between 18 and 30 years old, we offer you a wide range of jobs with a ___duration varying from two weeks to three months.
项目的持续时间取决于资源的可用性。
The ___duration of the project depends on the availability of resources.