Closed boundary
[化] 闭式边界
🧩 词语组成解析
closed
[klozd]
adj. 关闭着的，封闭着的;密闭着的，保密的;<美>准备好了的，定了契约的;
v. “close”的过去式和过去分词;
clos=close关闭+ed已...的→关闭了的
🗣️ 情景例句
Your boyfriend is a bag of bones.
你的男朋友瘦得皮包骨头。
I'm afraid it's going to be too wide.
我怕它将太宽。
Do you remember when the three of us went on a picnic?
我们三个人一起搞过野餐，你还记得吗？