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 heard that you get vitamin D from sunshine, and that you soak it like a sponge.
我听说人们像海绵一样从阳光中摄入维生素D。
Could you tell me where is the elevator?
你能不能告诉我电梯在哪里？
Jim is writing. Lily isn't writing. She's looking at the blackboard.
吉姆在写字。莉莉没在写字。她在看黑板。