Conservation of matter
[化] 物量守恒; 物质常住
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
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
I was teaching music,
我当时教音乐，
I'm too hungry.
我太俄。
When he landed near Dover, the first person to greet him was a local policeman.
当他在多佛着陆后，第一个迎接他的是当地一名警察。