He fluctuated between hope and despair.
他时而充满希望时而失望。
He alternated between hope and despair.
他时而充满希望，时而绝望。
The best bridge between the hope and despair is a good night's sleep.
希望和失望两者的最好桥梁，是一场香美的夜眠。
The best bridge between hope and despair is often a good night's sleep.
从失望到希望，最好的办法是一夜好觉。
The best bridge between hope and despair is often a good night's sleep.
从失望到希望，最好的办法是一夜好觉。
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