Polymine
聚乙烯亚胺; 聚乙烯亚胺
🗣️ 情景例句
Do you think so?
真的这么认为？
Do you have any comments to make on the recent developments.
你对最近事态的发展有什么评论吗？
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。