调节 tiáojié to adjust
to adjust; to regulate; to harmonize; to reconcile (accountancy etc)
How to remember 调节: 调 tune + 节 section = to adjust.
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How it is used
- To adjust / regulate to the right level - 调节温度 (tiáojié wēndù) to regulate the temperature.
- Fine-tuning something into balance: emotions, climate, supply - 调节情绪 (tiáojié qíngxù) to manage one's mood, 调节器 (tiáojiéqì) a regulator.
- Reading is tiáo here (not diào). Contrast 调整 (tiáozhěng), a one-off restructuring/adjustment; 调节 implies continuous balancing.