Knockup
n. [竞赛] 暖身练习
🗣️ 情景例句
I have been learning English for three years now.
我学英语有3年了。
After a successful career in business,he was appointed ambassador.
在生意的成功以后，他被指定为大使。
This way, he can kill two birds with one stone.
这样他就能两全其美。