活塞 (huó sāi) — piston

뜻

예문

• 汽车发动机的活塞需要定期检查。
  Qì chē fā dòng jī de huó sāi xū yào dìng qī jiǎn chá.
  The piston of a car engine needs regular inspection.
• 这个活塞已经磨损了，需要更换。
  Zhè ge huó sāi yǐ jīng mó sǔn le, xū yào gēng huàn.
  This piston is already worn out and needs to be replaced.
• 活塞在气缸内上下运动，产生动力。
  huó sāi Zài qì gāng nèi shàng xià yùn dòng, chǎn shēng dòng lì.
  The piston moves up and down inside the cylinder, generating power.