Nate answered that birth had already stared Maudie had pain a short time ago.

VOA: special.2010.01.09

It's very unlikely any of you would either but they go a long time without food, suggesting they do not want to cause this other chimpanzee pain.

你们也不会,但它们忍了很长时间才吃，这表明它们不想造成另一个黑猩猩受苦。

耶鲁公开课 - 心理学导论课程节选

Today we tell about headaches, the pain that strikes almost everyone at some time.

VOA: special.2010.03.30

Acute pain happens fast and usually lasts a short time.

VOA: special.2009.02.10

But chronic pain can last a long time.

VOA: special.2009.02.10

"Now that we have discovered the endogenous capsaicin molecules, for the first time, we can block their synthesis and therefore we can treat pain at its cause."

VOA: standard.2010.05.04