循环重计算
I want to speak to you re your behaviour. [口]关于你的行为，我想跟你谈一谈。
I did the calculation by the rule of three. 我是根据比例运算法则计算出来的。
Re your letter of 1 September ... 关於您9月1日的来信 ...
After much calculation, they offered him the job. 经过慎重考虑，他们把这项工作交给他了。
Did I make any error in my calculation? 我计算中有没有出差错?
