Polysulphide
n. [化]多硫化物
🗣️ 情景例句
Different kinds of activities, such as commenmorative meetings, planting trees,
举行各种各样的活动，例如召开纪念大会，植树造林，
Business sweetens pleasure, and labour sweetens rest.
工作后消遣更愉快，劳动后休息更舒畅。
If only he were here.
要是他在就好了。