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。
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。
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.
而中国的传统挑战则是，要以全球百分之七的耕地，养活世界百分之二十的人口。
Breast-feeding presents another challenge.
母乳喂养带来另一个挑战。
And the challenge of feeding such a rapidly growing population will be aggravated by climate change.
由于气候变化的影响，要养活如此迅速增长的人口，我们必将面临更加严峻的考验。
We should also recognize that we already have a huge challenge ahead of us because we're going to be feeding about 50 percent more people toward the end of the century, or more.
我们还应该认识到，我们已经面临着一项巨大的挑战，因为在本世纪末，我们要养活的人口是现在的一倍半，甚至更多。
Conclusion The asthmatic inflammatory degree of mice was influenced by feeding surroundings, strains, adjuvant and challenge methods, which should be considered in experimental design.
结论小鼠哮喘炎症程度受饲养环境、种属、佐剂及激发方法的影响，实验设计时应予充分的注意。
Conclusion The asthmatic inflammatory degree of mice was influenced by feeding surroundings, strains, adjuvant and challenge methods, which should be considered in experimental design.
结论小鼠哮喘炎症程度受饲养环境、种属、佐剂及激发方法的影响，实验设计时应予充分的注意。
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