Gasmetry
气体测量
🗣️ 情景例句
Hot dog? Only seventy-five cents.
要热狗吗 只要七十五分钱。
This is Lesson One.
这是第一课。
This head must have been found in Classical times and carefully preserved.
她的脑袋一定是在古希腊罗马时代就为人所发现，并受到精心的保护。