Htab
abbr. hexadecyl trimethyl ammonium bromide 溴化十六碳烷基三甲銨
??? 情景例句
How do you stay so young-looking?
你怎樣保持如此年輕的？
May I ask you where you are from?
我能問你從哪里來嗎？
He doesn't care about me.
他并不在乎我。