Polytungstate
n. 多钨酸盐
🗣️ 情景例句
have become good friends, haven't you?
成了好朋友，不是吗？
Who are you?
你是谁？
The man had connected the air-line to a supply line of oxygen, not compressed air.
这个工人把供气管接到了氧气供应管上，而不是接到压缩空气管上。