活塞 huó sāi 🔊 piston + Review this word Meanings huó sāi piston Its characters 活huóto liveHSK 4塞sāito plug; to stop up; to stuff inHSK 6 In sentences Pinyin 这个zhè ge活塞huó sāi不bù接触jiē chù汽缸qì gāng盖gài。The piston does not come into contact with the cylinder cover. #1582772