Polydiene
聚二烯
🗣️ 情景例句
If you cheat in a test, you've really only cheating yourself.
如果你在测验中作弊的话，你欺骗的只有你自己。
He knows most who speaks least.
大智者寡于言。
We'll have to talk it over some more.
这个我们还得再谈一谈。