adj.不能持續(xù)的；無(wú)法支撐的；無(wú)法維持的
This is unsustainable in the long run. 從長(zhǎng)期來(lái)看，這是不可持續(xù)的。
The present level of the dollar is widely judged to be unsustainable. 人們普遍認(rèn)為，美元無(wú)法維持當(dāng)前的水平。
