Trichloracetaldehyde
氯醛
??? 情景例句
Sometimes he's very sad.
他有時很憂悒。
What do you do in your spare time?
空閑時間你干什么？
The latest exhibitions, films, or plays are only a short bus ride away.
坐公共汽車幾站路，就可看到最新的展覽、電影、戲劇。