Double-header
[机] 内部二重分割式管或箱
🧩 词语组成解析
double
['dʌbl]
adj. 双的;两倍的;两面派的;双人用的;
vt. 使加倍;把…对折;重复;
vi. 加倍，加倍努力;快步走;
adv. 两倍地;双重地;
n. 两倍;双精度型;
doub二，双+le反复 → 反复两倍 → 翻倍
header
['hedə]
n. 头球;割穗机;（计算机打印时自动加在各页顶端的）标头;集管;
🗣️ 情景例句
Why do you consider yourself qualified for this job?
为何你认为你自己符合这职位的资格？
What were you doing when I called you on the telephone?
当我打电话给了你时，你正在做什么？
The use of pesticides and fertilizers produces cheap grain and vegetables.
使用杀虫剂和化肥生产出廉价的谷物和蔬菜。