柯林斯詞典inner tube (inner tubes) 1. N-COUNT An inner tube is a rubber tube containing air that is inside a car tyre or a bicycle tyre. 內(nèi)胎 返回 inner tube劍橋詞典a tube filled with air that fits inside a car or bicycle tyre （輪胎的）內(nèi)胎 返回 inner tube