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- A generalization of formula of integration by parts is given and formalized arithmetic of indefinite integral has been discussed. 摘要给出了分部积分公式的推广形式，并讨论了分部积分过程的形式化。
- 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。
- We were invited to a formal luncheon. 我们被邀参加一次正式的午宴。
- He cast his last remark in more formal wording. 他用更正式的措词表达了最后一句话。
- Don't you be so fucking formal with me. 别你他妈的对我这么一本正经了。
- 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。
- The letter is written in formal style. 这封信是用正式文体写的。
- 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。
- Modern life trends towards less formal customs. 现代生活倾向于较少拘泥于客套习俗。
- 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。
- The job does not require any formal training. 做这种工作不需要任何正规训练。
- I'm composing a formal reply to the letter. 我正写一封郑重其事的回信。
- She is not used to the formal mode of address. 她不习惯于这种正式称呼。
- The letter was formal in its wording. 此信措辞正式。
- Official documents are written in formal register. 官方文件是以正式语体写成的。
- They maintained only formal unity among themselves. 他们只在表面上保持一致。
- Formal negotiations are under way. 正式谈判正在进行。
- Loosen up, this isn't a formal occasion. 随便一些,这不是正式场合。
