🧩 词语组成解析
n. 船体纵向二阶波振；弹簧现象；弹性装置
cow
[kaʊ]
n. 奶牛，乳牛;母兽;雌（象，鲸等）;<侮辱>对女性的蔑称;
vt. 恐吓;吓唬;威胁;
🗣️ 情景例句
to ask Dad to sign as a guarantor.
请爸爸当担保人为我签字。
I took charge of the group.
我管理过那批人。
How many would you like to order?
您要订多少？