Solidities
(solidity 的复数) n. 固体性, 坚硬, 坚固, 稳健, 体积
🗣️ 情景例句
OK.
好的。
Have you been busy with schoolwork?
学校的功课很忙吗？
What is needed in the case of noise is a study of large numbers of people living under noisy conditions,
对于噪音问题，需要对大量生活在噪音中的人进行研究，