Teac
[医] 氯化四乙铵
🗣️ 情景例句
It's hard for some older people to take all that noise.
一些老年人没办法忍受那些噪音。
It's a beautiful country with forests, mountains and deserts.
这个国家很美，它有很多森林、山和沙漠。
Past experience has taught us that certain accomplishments are beyond attainment.
以往的经验告诉我们有些事是办不到的。