v. make longer
v. become long or longer
vt. 加长, 使延长
vi. 变长
1. She decided to lengthen her dress for the wedding.
她决定为婚礼把裙子加长。
2. The teacher asked us to lengthen our essays to meet the word count.
老师要求我们把论文加长以达到字数要求。
3. You can lengthen the time you spend studying by creating a schedule.
你可以通过制定一个计划来延长学习时间。