v.形成浮垢（或浮渣）,覆盖着浮渣
scum的过去分词和过去式

原形：scum第三人称单数：scums过去式：scummed过去分词：scummed现在分词：scumming

The scum floating on the surface of the pond is a mixture of algae and debris.
池塘表面漂浮的浮渣是藻类和杂物的混合物。
He's nothing but scum who preys on the vulnerable.
他只是个渣滓，专找弱势群体下手。
The police operation aimed to wipe out the scum of the criminal underworld.
警方行动旨在清除犯罪世界的渣滓。
She scraped the scum off the soup before serving it to her guests.
她在给客人上汤前先撇去了上面的浮沫。
They consider anyone who cheats on their partner to be the scum of the earth.
他们认为对伴侣不忠的人是社会的败类。
The river cleanup project aims to remove industrial scum and restore the water quality.
河流清理项目旨在去除工业浮渣并恢复水质。
He rose from the streets, determined not to let his past as society's scum define him.
他从街头崛起，决心不让作为社会渣滓的过去定义自己。
The politician's corrupt actions have proven him to be the worst kind of scum.
那位政客的腐败行为证明他是最恶劣的那种人渣。
After the storm, the beach was littered with plastic waste and other scum washed up by the waves.
暴风雨过后，海滩上满是塑料垃圾和其他被海浪冲上来的污物。
It's time we took a stand against these online trolls, who are nothing but scum hiding behind anonymity.
是时候我们站出来对抗这些网络喷子了，他们不过是躲在匿名背后的渣滓。