population bottleneck

基本解釋

With milder winters, this population bottleneck may be removed for many species.
如果冬季較為溫曖，那么對很多種群來說，抑制作用就可能消失。
Improving the quality of rural population and the level of human capital, breaking the "bottleneck" restrictions of rural labor transfer.
第六，提高農(nóng)村人口素質(zhì)和農(nóng)村人力資本水平，突破制約農(nóng)村勞動力轉(zhuǎn)移的瓶頸。
China's population resources, economic development and ecological environment of the outstanding contradictions and become China's future development constraints biggest "bottleneck."
中國人口資源、經(jīng)濟發(fā)展與生態(tài)環(huán)境之間的突出矛盾，成為制約中國未來發(fā)展的最大“瓶頸”。