Periphery seal
[医] 周围封闭
🧩 词语组成解析
seal
[sil]
n. 密封;印章;海豹;封条;
v. 密封;盖章;决定;封上（信封）;
🗣️ 情景例句
Yes, I'm sure I can.
是的，当然可以。
Is that girl a student?
那个女孩是学生吗？
I saw him playing football on the playground.
我看见他在操场上踢足球。