✅ 同义词
🗣️ 情景例句
He keeps himself fit by running 5 miles every day.
他每天跑五公里以保持身体健康。
There's nothing to do because tomorrow is a holliday.
无所谓因为明天是假期。
If one group of people were disturbed from their eye-movement sleep for several nights on end,
如果有两组人，一组人连续几夜在眼球队活动时被叫醒；