名词:lengthener 动词过去式:lengthened 过去分词:lengthened 现在分词:lengthening 第三人称单数:lengthens
v [I, Tn] (cause sth to) become longer （使某物）变长
*The days start to lengthen in March. 三月份白昼开始变长.
* lengthen a skirt 把裙子放长. Cf 参看 shorten.
v [I and T]
to make something longer or to become longer
≠ shorten Can you lengthen this skirt for me? The days lengthened as summer approached.
1. He asked the tailor to lengthen his coat. 他请裁缝把他的外衣放长些。