Feeding today's population is a challenge for an already-stressed environment.
养活今天的人口对已经很紧张的环境来说是一个挑战。
2
Feeding billions of starving people poses a daunting challenge, and many argue that industrialization has only drained the world of its natural resources.
要是数十亿人免于挨饿，是一项极为艰巨的挑战。有人认为，工业化只是耗尽了世界上的自然资源。
3
China is faced with the traditional challenge of feeding 20 percent of the world's population on only seven percent of the planet's farmland.