英汉词典

1. 正式的;规范的;庄重的
    Formal speech or behaviour is very correct and serious rather than relaxed and friendly, and is used especially in official situations.

    e.g. He wrote a very formal letter of apology to Douglas...
           他给道格拉斯写了一封非常正式的道歉信。
    e.g. Business relationships are necessarily a bit more formal.
           商业关系有必要更正式一些。