我偶然发现睡在桥下的孩子。
茶是世界上最重要的饮料,而且是人们偶然发现的。
Tea is the most important drink in the world, and it is an accidental invention.
茶叶是在大约5000年前被偶然发现可作为饮料饮用。
Tea was discovered as a kind of drink by accident about 5,000 years ago.
Occasionally, you'll find you need to cancel out units, because, of course, you're always doing unit analysis as you solve your problems, and sometimes you'll need to convert joules to kilogram meters square per second squared.
偶然地,你会发现需要消除单位,因为在解题时,经常要做单位分析,所以有时候需要把,焦耳换做,一千克乘以米的平方除以秒的平方。
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