Closed shell
[化] 闭壳层; 封闭壳
🧩 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
shell
[ʃel]
n. （贝、卵、坚果等的）壳;外壳;炮弹;（人的）表面性格;
vt. 去壳，脱落;炮击;
vi. 剥皮;炮轰;
🗣️ 情景例句
You'll need to hurry up, or you'll miss the train.
你得快点，否则赶不上火车。
If you would have a thing well done, do it yourself.
如要是情做得好，你须亲自动手搞。
I hate them.I'm sure I've got a low mark.
我讨厌法语。我的法语成绩肯定很低。