Polysulfide
[化] 多硫化物\\n[医] 多硫化物
🗣️ 情景例句
I majored in economic and trade English.
我主修的是经贸英语。
New lords,new laws.
新君立新法。
The most wonderful piece of machinery on show was Nasmyth's steam hammer.
其中最奇妙的是内史密斯的蒸汽锤。