Food shortages often occur in time of war . 在戰(zhàn)爭(zhēng)期間常常發(fā)生糧食短缺的情形。
Food shortages will probably get worse towards the end of the century . 食物短缺的到本世紀(jì)末可能更加嚴(yán)重。
As soon as they heard about possible food shortages , they began to stock up . 他們一聽(tīng)說(shuō)食物可能短缺,就立即儲(chǔ)備起來(lái)。
The peasants went from food shortages and forced imports, to bumper harvests and rising exports . 農(nóng)民們從糧食短缺和被迫調(diào)進(jìn),變?yōu)榧Z食豐收和源源外運(yùn)。
There is a built-in mechanism that permits the population to respond to crowding or food shortage early enough . 存在著某種內(nèi)在機(jī)制,它使得種群能足夠早地對(duì)擁擠或食物不足作出反映。