您要查找的是不是：
- 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。
- This non sequitur invalidates his argument. 他不根据前提推理因而论证无效。
- 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。
- 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。
- Patience is a sine qua non for a good teacher. 做个优秀教师必不可少的条件是要有耐心。
- The diplomat was declared persona non grata. 这位外交家被宣布为不受欢迎的使节。
- He is declared personal non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- I had had a few beers and was completely non compos mentis. 我喝了些啤酒就头昏脑胀了。
- He was declared persona non grata and forced to leave the country. 他被宣布为不受欢迎的人而被迫离开该国。
- 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。
- We decided to declare them personae non grata. 我们决定宣布他们为不受欢迎的人。
- 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。
- 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。
- To solve by means of arithmetic. 计算用算术方法解决
