Polysulfide
[化] 多硫化物\\n[医] 多硫化物
🗣️ 情景例句
I can believe that. One good thing about ping pong is that it doesn't need much space.
我几乎不敢相信。乒乓球最大的好处是不占地方。
Why are you sitting over there?
你为什么坐在那里？
When is the most convenient time for you?
你什么时候最方便？