Polysulfonate
多磺酸盐
🗣️ 情景例句
I'm going to show him the photos on Monday morning.
我要在星期一早晨给他看这些照片。
Don't look down on others!
别瞧不起人了。
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
儿童必须发展（部分通过触觉）粗略判断三维空间距离的能力。