Exercising
v. 锻炼, 训练, 练习( exercise的现在分词 ); 锻炼（身体某部位）; 使焦虑; 发挥（作用）
✅ 同义词
🗣️ 情景例句
I'm terribly sorry about that.
为此我非常抱歉。
I haven't the slightest idea what you're talking about.
我一点也不知道你在说些什么。
OK! Don't worry. I can get it.
不用担心，我能拿下来。