Polysulfide
[化] 多硫化物\\n[医] 多硫化物
🗣️ 情景例句
Mary and Arnold are going steady.
玛丽和阿诺德正式成为情侣。
If you want knwledge, you must toil for it.
若要求知识，必须刻苦学习。
I can't decide!
我拿不准！