length·en /ˈlɛŋ(k)θən, ˈlɛn(t)-/
(vt.)加長,使延長(vi.)變長
lengthen
加長
Length·en v. t. [imp. & p. p. Lengthened p. pr. & vb. n. Lengthening ] To extent in length; to make longer in extent or duration; as, to lengthen a line or a road; to lengthen life; -- sometimes followed by out.
What if I please to lengthen out his date. --Dryden.
Length·en, v. i. To become longer.
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lengthen
v 1: make longer; "Lengthen this skirt, please" [ant: shorten]
2: become long or longer; "In Spring, the days lengthen" [ant:
shorten]