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
What are your hobbies?
你的爱好是什么？
This is a ticket stub.
这是一张票根。
Today we have two new students. Their names are Lucy and Lily.
今天我们班来了两位新同学，他们的名字叫Lucy和Lily。