Extraneous matter
[化] 外来杂质; 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 studied harder to improve his English.
他更加努力提高英语水平。
All bags contain an inner waterproof lining.
所有包内都有一层防水内衬。
It seems ideal for settlement.
看起来，它很适合居住。