Ms Smart: But your red T-shirts are there. They are on the line and they are wet. Look!

漂亮女士：但是你的红t恤在这里。它们在这条线上并且它们都是湿的。看！

youdao

I have to say that I drew the line at getting a capsaicin molecule tattoo. And I did not buy the T-shirt with the flaming red mouth and the legend “Pain Is Good.”

但是，我必须声明一点，我对辣椒的痴迷是有节制的，我也不会去买那些绘着烈焰红唇标着“痛苦即享受”字眼的怪异T恤。

youdao

The red line is long-term interest rates, but I won't talk more about that right now.

红色的线是长期利率,这节课不会谈论

耶鲁公开课 - 金融市场课程节选

If the president can't enforce his own red line on chemicals, what do you think our adversaries (North Korea and Iran) and friends (Israel and Saudi Arabia) will conclude on the nuclear issue?

CNN: Obama's no-win options in Syria

Alaa Al Iraqi, Supreme Council spokesman, said officials warned protesters that the Defense Ministry was "a red line" that shouldn't be crossed.

CNN: STORY HIGHLIGHTS

And so despite my status as a running refusenik, I found myself herded, among a crowd of far fitter, healthier, sportier types, into a pen behind the start line, part of a sea of red t-shirted runners beneath a threatening gray sky.

CNN: Crossing the Olympic finish line