你知道，经济不景气使全球货币像坐过山车一样起伏不定。
You know that troubled economic times have put global currency on a roller coaster ride.
你可能意识到自己情绪起伏不定的性质。
You're probably noticing the surging nature of your emotions.
用自然步法跑，避免短促的，起伏不定的步法。
Try to run with your natural gait, and avoid taking short, choppy strides.
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