飞轮

fēilún

飞轮 — fēilún

1. flywheel (a heavy rotating wheel used to store rotational energy)

   发动机的飞轮需要定期检查以确保运行平稳。 fādòngjī de fēilún xūyào dìngqījiǎnchá yǐ quèbǎo yùnxíng píngwěn — The engine's flywheel needs periodic inspection to ensure smooth operation.

2. freewheel; (bicycle) cassette — the set of sprockets on the rear hub allowing coasting

   我需要换一个新的飞轮，因为现在踩起来有打滑的感觉。 wǒ xūyào huàn yígè xīn de fēilún yīnwèi xiànzài cǎi qǐlái yǒu dǎhuá de gǎnjué — I need to replace the freewheel because it feels like it's slipping when I pedal.

3. a fast-moving bike; (colloquial) a speedy bicycle or cycling machine

   那辆粉色的飞轮骑得真快，马上就不见了。 nà liàng fěnsè de fēilún qí dé zhēnkuài mǎshàng jiù bújiàn le — That pink fast bike was riding so quickly it disappeared right away.