温差 wēnchà difference in temperature
How to remember 温差: 温 warm + 差 differ from = difference in temperature.
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How it is used
- Means the temperature difference/range - 昼夜温差大 (zhòuyè wēnchà dà) a big day-night temperature swing.
- Weather and science contexts; the gap between high and low temperatures.
- Common travel advice: 早晚温差大，注意保暖 (big morning/evening temperature gap, dress warmly).