回升 huíshēng to rise again after a fall
to rise again after a fall; to pick up; rally (stock market etc)
How to remember 回升: 回 return + 升 to advance = to rise again after a fall.
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How it is used
- To rise again after a dip - 气温回升 (qìwēn huíshēng) temperatures pick back up; 股市回升 (gǔshì huíshēng) the market rallies.
- Specifically a recovery/rebound from a low, not a first-time rise (that's 上升 shàngshēng). Common in weather and economics.