If your humor falls flat, do what professional humorists do. Pretend you are serious.

如果你的笑话沉闷乏味，就做一些幽默大师做的事情，假装你是很认真的。

youdao

Did you know, a priori, what professional domain you would study at university or did you have doubts?

您事先是否知道在大学里会学习什么专业领域，或者您是否有过怀疑？

youdao

What about students who want to learn specialist English for their work or professional life?

那些为了工作或职业生涯而想要学习专业英语的学生怎么办呢？

youdao

These professional criminals often used force to take what they wanted -- cows,horses or money.

VOA: special.2010.03.10

In the code of conduct, professional conduct, that we embody by this code here is comparable to what you are expected to adhere to in your professional lives.

在行为准则中，专业准则，这个准则所体现的相当于,你所期待去追求的,在你的专业生活中。

麻省理工公开课 - 固态化学导论课程节选

What you normally do is you go to a dealer and a dealer is someone, a professional, who participated in the auction and bought these up to accumulate an inventory to then sell off to you, the customer.

你通常会去找一些中间商,中间商是专业从业者,他们参与拍卖,积蓄库存,再转销给一般顾客

耶鲁公开课 - 金融市场课程节选

After all, that is what professional managers are paid to do.

FORBES: Financial Sector Is Full Of Crummy Stocks

What professional associations do you belong to?

FORBES: Connect

Mr. Buffett argues that normal investors should not necessarily be able to find out what professional investors are doing, especially while they are still busy doing it, reminding me a lot of the Not in My Back Yard situation.

FORBES: If Warren Buffett Can Have Secrets, Why Can't I?