Aritieren
(钢铁表面的)渗铝法
🗣️ 情景例句
The newspapers don't come out till about ten o'clock.
报纸要差不多十点钟才出来。
No, she isn't.
不，她不是。
Many people prefer living in the country to living in the town.
许多人喜欢住在农村而不喜欢住在城市。