?? 詞語組成解析
n. 船體縱向二階波振；彈簧現(xiàn)象；彈性裝置
cow
[ka?]
n. 奶牛，乳牛;母獸;雌（象，鯨等）;<侮辱>對女性的蔑稱;
vt. 恐嚇;嚇唬;威脅;
??? 情景例句
To advertise during prime time TV is very expensive.
在電視的黃金時段買廣告是很貴的。
In university, students are trained to become doctors and nurses.
大學的學生被訓練成為醫(yī)生和護士。
His great flight lasted thirty-seven minutes.
他這次偉大的飛行持續(xù)37分鐘。