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- The little boy was not good at arithmetic. 这个小男孩算术不太好。
- She grounded her pupils well in arithmetic. 她给自己的学生打下良好的算术基础。
- He got the answer by mental arithmetic. 他用心算得出了答案。
- He is good at mental arithmetic. 他擅长心算。
- A convex surface, body, part, or line. 凸面、凸面体、凸面部分或凸线
- I'm good at history but not so hot at arithmetic. 我的历史成绩不错,但算术不太好。
- He brushed up on fractions before taking the arithmetic test. 在参加算术考试前他又重温了分数。
- convex arithmetic 凸方法
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样,双凹透镜也可以缩小。
- What's the correct answer to this arithmetic question? 这道算术问题的正确答案是什么?
- My brother is poor at arithmetic. 我弟弟的算术很差。
- Light can be collected with the convex. 凸透镜具有聚集光线的作用。
- The convex surfaces faces toward the left. 凸面朝左方。
- A convex lens is used to concentrate rays of light. 凸透镜用于聚集光线。
- Her school report shows that she is weak at/in arithmetic and biology. 从她的学习成绩单可看出她算术和生物成绩差。
- A stone tool with a convex side. 龟甲形石斧一边凸起的石制工具
- Some hard problems in arithmetic bewilder me. 算术上一些难题使我糊涂。
- We do addition and subtraction in arithmetic. 在算术里,我们作加减运算。
- The boy used to be no good at arithmetic. 过去那男孩算术总是不行。
- A deep - red garnet, unfaceted and convex. 红榴石一种深红色的石榴石,无刻面呈凸圆状