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代替词是jollification,中文意思是活动,热闹
排练场被午餐时段活动搞得很热闹。The rehearsal studio is buzzing with lunchtime activity.
经济活动常常遵循周期性模式。Economic activity often follows a cyclical pattern.
这个测试显示出大脑的电流活动。The test records the electrical activity of the brain.
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