Scientific effort
[计] 科研工作, 科研计划
🧩 词语组成解析
🗣️ 情景例句
Sometimes it sounds a little stubbon.
有时候，这显得有点固执。
Fall sick and you will see who is your friend and who is not.
困难见友情。
They were glad of the examination being over.
他们为考试结束了而高兴。