4周搞定2000+托福核心词
sustaining = sus(下，底) + tain(拿住) + ing(形容词) = 自立的
suspend = sus(下，底) + pend(悬挂) = 挂在下面→悬挂→中止
sustaining = sus(下，底) + tain(拿住) + ing(形容词) = 自立的
attain = at(加强) + tain(拿住) = 拿住了→获得
在下面握住→支撑
sustain
常考释义
Given sufficient time, even in very rich habitats, human population size can reach carrying capacity, the maximum population an area can sustain within the context of a given subsistence system.
Given sufficient time, even in very rich habitats, human population size can reach carrying capacity, the maximum population an area can sustain within the context of a given subsistence system.
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