Refractory deposition
[机] 耐火层
🧩 词语组成解析
🗣️ 情景例句
In my opinion, winter in Beijing is not very cold.
我觉得北京的冬天不是特别冷。
Don't make rude remarks about their appearances.
不要口无遮拦，批评他们的外表。
and is still non-existent in a number of 'civilized' nations.
今天，在许多文明国家里，义务教育迄今尚未实行。