Polysulfuration
聚硫化作用
🗣️ 情景例句
My mistake. it won't happen again.
是我的错。 不会再发生类似的事情了。
None but the wearer knows where the shoe pinches.
只有那个穿鞋人，才知哪里鞋轧脚。
It's very thoughtful of you.
你想得真周到。