Boundary face
[计] 边界面
🧩 词语组成解析
face
[fes]
n. 面容;表面;脸;方面;
vt.& vi. 面对;面向…;正视;承认;
vt. （感到不能）对付;（明知不好办而）交谈;必须对付（某情况）;面临…;
face=fac表示脸、面 → 脸；表面；外表
🗣️ 情景例句
I'm having some trouble keeping food down.
我吃东西时感到困难。
Don't let him fool you.
别被他唬了。
Many pedal their tricycles, but most of them prefer to push or drag them.
很多孩子用脚蹬车，但多数孩子更愿意推或是拉着三轮车。