Sym-tetrachloroacetone
[化] 对称四氯丙酮; 1,1,3,3-四氯丙酮
🧩 词语组成解析
[计] 符号, 系统, 制
🗣️ 情景例句
I don't get it.
我不明白。
When is he expected to be back?
他什么时候回来？
The great cities have been built with no regard for us.
大城市的建设毫不关心我们。