Non-volatile matter
[化] 不挥发物质
🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
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
to pick up a surprise.
接一个意外惊喜回来。
Pick up the receiver and deposit a coin in the slot.
拿起听筒和放一个硬币到投币口。
This time it was the postman and he wanted me to sign for a registered letter!
这次是邮递员，他要我签收一封挂号信！