Commuter and hybrid
For riding to work and around town. Look for mudguards, a rack, lights and a 400–600 Wh battery. A mid-drive motor feels natural on hills; a rear hub is simpler and cheaper.
低跨式
Easy to get on and off — great if you stop often or ride（work clothes. Same parts as a commuter.）
摺疊
Fits（a car boot, on the train or under a desk. Smaller wheels and batteries; check the folded size and the weight before you buy.）
載貨
Carries kids, shopping or deliveries. Longer frames, strong motors and big batteries. Check the rated load and that the brakes are up to it.
山地車（e-MTB）
Built for trails: suspension, wide tyres and powerful mid-drive motors. Off-road wear adds up — ask about service history.
肥胎
Big, soft tyres for sand and gravel. Many fat-tyre bikes sold online have motors well over 250 W and are not road legal — check the rules.
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