exercise in的用法和樣例：
例句
- The scathing editorial simply boils down to an exercise in partisan politics.
措詞強烈的社論可以簡單地歸結為政黨政治的綱領 - The coach gave a sales talk on exercise in the school assembly.
教練在校方會議上大談運動的好處。 - Don't write your exercise in red ink.
不要用紅墨水寫練習。 - Do not write your exercise in red ink.
不要用紅墨水寫你的練習。
