4周搞定2000+托福核心词
attach = at(加强) + tach(钉) = 接触上→附上
attainable = at(加强) + tain(拿住) + able(形容词) = 可加强拿住的→可获得的
sustaining = sus(下，底) + tain(拿住) + ing(形容词) = 自立的
attainable = at(加强) + tain(拿住) + able(形容词) = 可加强拿住的→可获得的
拿住了→获得
attain
常考释义
Although more and more people attain an advanced age as a result of developments in medical care and better nutrition, the characteristic upper limit for most remains 80 years.
即使越来越多的人因为医疗和营养的改善寿命越来越长，但对于绝大多数人来说寿命的上限仍然是 80 岁。
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