Shell theory
[计] 壳体理论
🧩 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
Yah, I have been here only two months.
是啊，我在这儿仅两个月。
Would you please tell Mr. Cooper that I'm here.
请您告诉库珀先生我在这里。
How long has Kate been at her school?
凯特进校学习有多长时间了？