Polysulfide
[化] 多硫化物\\n[医] 多硫化物
🗣️ 情景例句
And Richard thanks you.
Richard也会感谢你。
He who has a mind to beat his dog will easily find his stick.
欲加之罪，何患无辞。
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。