K-shell
[医] K层, K壳(治原子构造)
🧩 词语组成解析
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
The bank canceled his loan and took back his car.
银行取消了他的贷款并收回了他的车。
I've lived here for five years.
我住在这里有5年的时间了。
Be careful. It's dangerous. You're too high.
小心。危险！你上得太高了！