Polysulfonate
多磺酸盐
🗣️ 情景例句
Thank you, Susan.
谢谢你， Susan。
I get out of bed about 7 o'clock every morning.
我大约每天早上7点钟起床。
This knocks the turtle down several feet.
这一下子把海龟撞下去好几英尺。