exercised

I do stomach exercises most days.

大多数时候我做锻炼腹肌的运动。

an exercise in public relations

公共关系方面的演练

The exercise of restraint may well be difficult.

保持克制可能是件很难的事。

She exercises most evenings usually by running.

她几乎每天晚上都去锻炼，通常是跑步。

Always exercise caution when handling radioactive substances.

处理放射性物质时要时刻小心谨慎。