不可换部件 [计] nonreplaceable unit
不可换上下文有关语言 noncommutative context sensitive language
不可转换的 Inconvertible ; nonreversible ; nonreversing
不可退换 Can not be returned
不可兑换的公司债券 Perpetuity
不可互换附件 [电] non-interchangeable accessory
不可兑换货币 Inconvertible Currency ; irredeemable currency
不可换回的 irremediable
不可兑换债券 irredeemable bond ; nonconvertible bond
不可换性替代 noncommutativity of substitution
然而对这两种人来说,都需要换一换脑子,改变一下气氛,转移一下注意力,这是不可缺少的。
Yet to both classes, the need of an alternative outlook, of a change of atmosphere, of a diversion of effort, is essential.
在我的生命中,对于此,我仍然相信不可思议的三连胜式——圣诞老人、复活节小兔和换齿仙子。
At that point in my life, I still believed in the magical trifecta—Santa Claus, the Easter Bunny, and the Tooth Fairy.
换而言之,对于处在2010年的我们,会说法语对理解这个世界真的如此不可或缺么,还是说,法语是一种格调的标志?
That is, is knowing French really so obviously central to engaging what we know in 2010 as the world, or is it that French is a kind of class marker?
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