noun 下载 🔗分享 公斤，千克 In the International System of Units, the base unit of mass; conceived of as the mass of one litre of water, but now defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 × 10-34 when expressed in units of kg⋅m2⋅s−1. Symbol: kg Examples : "The suitcase weighed over twenty kilos, so I had to pay an extra fee at the airport. " 那个行李箱重达二十多公斤，所以我不得不在机场支付了额外的费用。 mass unit science physics 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 千克，公斤 The unit of weight such that a one-kilogram mass is also a one-kilogram weight. Examples : "The recipe calls for two kilos of flour. " 这个食谱需要两公斤面粉。 mass unit 与AI对话词汇游戏阅读练习
