A required course
辅助 Assistant必修课
🧩 词语组成解析
a. 必需的
course
[kɔrs]
n. 课程;航线;行动方向;一道菜;
vt. 快速地流动;奔流;跑过;追逐;
vi. 沿…（方向）前进;指引航线;快跑;迅速移动;
cour 发生+se → n. 发展；进程，课程，一道菜
🗣️ 情景例句
Do you remember
你记得
In doing we learn.
经一事，长一智。
There was less food for birds and also for the prairie dog, a kind of animal which lives in holes in the ground.
供鸟类吃的食物少了，供草原犬鼠（一种生活在地洞里的动物）吃的食物也少了。