换气huànqìTop 35000Meanings1. to take a breath (in swimming)2. to ventilateCharacters used换to exchange气gasExamples1他tā潜进qiánjìn水shuǐ里lǐ，然后ránhòu又yòu浮上fúshàng水shuǐ来lái换气huànqì。He dived into the water and came up for air.