Aerotex
甲醛, 三嗪聚合物
??? 情景例句
And your friends are planning to go to Columbia?
而且你的朋友們也準備上Columbia大學 ，對嗎？
There is a crook(=affliction,trial) in the lot of every one.
人生總有倒楣事；人生總有不如意處。
I have no idea.
我沒有頭緒。