carelessness是什么意思 n. 粗心大意 n. the quality of not being careful or taking pains carelessness的用法和例句: 1. In fact, how careless all of you are. 事实上 你们都很不小心 2. I can't believe you could be so careless. 我真不敢相信你们这么不小心 3. You...