Need to cool something extra-fast? New research suggests that lasers might do the trick.
需要急速冷却东西吗?新的研究表明激光也许能解决这一难题。
What's more, demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050.
此外,发展中国家对动物产品的需求增长如此之快,以至于到2050年时每年将需要额外增加3亿吨谷物才能满足需求。
Eating too fast is one reason people pack on extra pounds.
吃饭太快也是发胖的重要原因之一。
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