Foreign matter
[化] 外来杂质; 夹杂物; 异物
🧩 词语组成解析
matter
['mætɚ]
n. 事件;（讨论、考虑等的）问题;重要性;物质;
vi. 要紧，重要;化脓;有重大影响;有重要性;
🗣️ 情景例句
he'll be an important decision-maker
他将成为一个重要的决策者
I'd like to sit in the front of the plane.
我要坐在飞机前部
It was the first joy I had known for years.
我豁然开朗了。这是我多年来第一次感到高兴的事了。