An essential prerequisite
必要条件
🧩 词语组成解析
an
[æn]
art. 一（在元音字母前代替不定代词a）;一任一某一;一个;
prerequisite
['pri:'rekwizit]
n. 先决条件，前提，必要条件;
adj. 必须先具备的，必要的;先决条件的;
🗣️ 情景例句
about your math teacher or your math homework.
你的数学老师或你的数学作业。
I ought to stay at home.
我应该留在家中。
Latham made another attempt a week later and got within half a mile of Dover, but he was unlucky again.
莱瑟姆一周以后也作了一次尝试，飞到离多佛不到半英里的地方。