Definition: to become longer or to make something longer Level: C1
政府正在考虑延长暑假的计划。
The government is considering plans to ___lengthen the summer holiday.
为了改善旅行，他们应该延长博物馆的参观时间。
To improve the tour, they should ___lengthen the visit to the museum.
春天白天变长，我们享受更多的日光。
As days ___lengthen in spring, we enjoy more daylight.
