He did not once mention the car industry.

他一次也没有提到汽车业。

youdao

Now imagine several deadlines all at once—final exams, graduation ceremonies, perhaps a wedding or a European vacation—not to mention all of your regular commitments, which do not go away.

现在设想一些突然而至的“死线”，比如期末考试，毕业典礼，婚礼策划或者假期安排…更不用说一些常规性的事情，想逃也逃不掉。

youdao

Once again, you'll have to actually mention that you're looking for some flexibility to actually get it.

你再一次不得不想起你，你不就是在找这种弹性并要得到它嘛。

youdao

One thing that I want to mention that is really important is once you have double bonds, what happens between those two atoms in the molecule is they can no longer rotate in relation to each other.

我要提醒你们的非常重要的一点事,一旦有了双键，分子中的两个原子,就不能相对旋转了。

麻省理工公开课 - 化学原理课程节选

Rice said Clarke did once mention in an early 2001 memo the possibility of al Qaeda sleeper cells in the United States.

CNN: Rice forcefully rebuts Clarke testimony

Only once does Sandberg mention the importance of humor in all of the struggles she has been through.

FORBES: Sheryl Sandberg Is Not Perfect And Other Truths To Be Found In 'Lean In'

Going back and reading Matt's why HD DVD will prevail, I noticed that not once does he mention picture quality as a deciding factor.

ENGADGET: How much of an impact is picture quality on the format war? HD