不一定: uncertain; not sure; not nec ...对: answer; reply不一定: uncertain; not sure; not necessarily so不一定的: indefinite不一定费力: raiselift raise未必,不一定: not necessarily也不一定会做: they prefers to be wrong不一定要大声说出: nice story with pictures不一定要这样吧: it doesn't have to be this way膏药”不一定都用“狗皮”: dog-skin plaster好看的不一定中用: the agreeable is not always the useful接受(“收到”并不一定“接受”): accept先进不一定先出: finufo first in not used first out眼见不一定为凭: there's more to them than meets the eye出口转内贸(不一定正确): back trading穿得好不一定衣着豪华: to be well dressed needn't mean luxuriously dressed但我不一定会照着做: if you say so空心吉他,不一定是木吉他: hollow guitar起因并不一定有结果: reason will not lead to solution闪光的不一定都是金子: all that glitters is not gold; all things are difficult before they are easy闪亮的东西不一定是金子: all is not gold that glitters填写表格(不一定每空必填): fill in the form也不一定是这个顺序: wasn't always in that order, either最美的花不一定最香: the proof of the pudding is in the eating不一: (不止一种, 不一样) vary; differ 长短不一 differ in length; 观点不一 not identical in views; 质量不一 vary in quality