Polysulfonate
多磺酸盐
🗣️ 情景例句
I made another lunch date for today
我和别人约好共进午餐，，
May I smoke?
我能抽烟吗？
Be careful! Don't throw your cigarette out of the window. If you do that, you may start a fire. Put it out in the ashtray.
当心！别把香烟丢到窗外。要是你那样做，会引起火灾的。把它熄灭在烟缸里。