The third petal is the lip. Orchids share this structure with lilies and irises.

VOA: special.2010.04.06

So, according to the expectations theory augmented with liquidity preference-- This strongly upward-sloping term structure in 2003 would reflect two things.

所以,根据结合了流动性偏好的,预期理论,2003年期限结构中表现出的,强烈上扬趋势反映了两方面的因素

耶鲁公开课 - 金融市场课程节选

I want to start by showing you this cartoon that you already know about with the structure of a double helix.

我想要给你们看这张卡通模型,你们都知道,这是DNA双螺旋结构

耶鲁公开课 - 生物医学工程探索课程节选