But some companies have a house style for formal reports where they use 'whom'.

但有些公司在正式报告中会使用“whom”，这也是他们独特的风格。

If we were writing a formal report or essay, we would have to find other words to replace 'and'.

如果我们要写一份正式的报告或论文， 我们就必须找到其他词来代替“和”。