noun 下载 🔗分享 千米,公里 (official BIPM spelling, Australian, New Zealand, Irish, Indian and South African spelling) An SI unit of length equal to 103 metres. Symbol: km Examples : "The school is two kilometers from my house, so I usually take the bus. " 学校离我家有两公里,所以我通常坐公交车。 unit math science geography 与AI对话词汇游戏阅读练习