Stelidium
柱齿
🗣️ 情景例句
I can't thank you enough for all the work you've done.
对于你所做的一切我真不知道如何感谢你才好。
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
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。