Narkosid
三氯乙烯
🗣️ 情景例句
Oh, you've been here before.
噢，你以前来过的。
Is his suit of which color?
他的西装是什么颜色的？
After the accident, all the lines and taps were clearly marked and new people joining the workforce were given a talk on safety before they started work.
火灾过后，所有的管道和龙头都被标得一清二楚，而且加入劳动队伍的新工人在开始工作之前要接受有关的安全教育。