v. 落下;跌倒;减少;沦陷;
n. 落下;瀑布;秋天;减少;
💡 所有的(all)的树叶落下(fall)来,秋天(fall)到了 网友:wangqidong 补充:(f)风把(all)所有的树叶吹下来,秋天(fall)到了
"Several factors have been adduced to explain the fall in the birth rate."
有几个因素已被援引来说明出生率降低的原因。
近义:plonk, slump, decline, decrease, descend, diminish
反义:arise, ascend, peak, stand, tower, uprise