Doctors treating migraine sufferers often order medicines from a group of drugs known as triptans.

VOA: special.2011.05.03

That is interesting because it kind of looks to some extent like the way neurons look and this is often known as neural networks.

有趣的是,因为它看上去很像神经元的样子,所以通常都将它称之为神经网络

耶鲁公开课 - 心理学导论课程节选

Then as the eighteenth century wears on, you begin to get the sense as is well known and I think often overstated you begin to get a cult of genius.

8世纪逐渐过去,浪漫主义的出现,开始涌现出一大批天才。

耶鲁公开课 - 文学理论导论课程节选

The cancer scientists say this cancer often begins with an infection caused by a bacteria called Helicobactor Pylori, also known as H-Pylori.

VOA: standard.2010.05.12

And with higher sea levels, heavy rains and massive tides known as storm surges, which often accompany tropical storms, can do unexpected damage.

VOA: standard.2009.11.09