Biodegradability
生物可降解性
🗣️ 情景例句
alone in the animal shelter.
独自在动物收容所 。
Didn't I tell you he's same size to me?
我没有说过他和我一样大小吗？
Oil rigs have to be repaired frequently and divers,who often have to work in darkness a hundred feet under water,
钻井平台需要经常修理，潜水员常常要在水面100英尺以下摸黑工作，