This is a sign of my economic status: I don't have to work. It is middle and lower-class women who do not get to observe purdah in this way.

但这恰好是我经济地位的标志：,我不需要工作，只有中下阶层的女人,才像这样不遵守深闺的习俗。

普林斯顿公开课 - 人性课程节选

If it's possible, use animals that don't feel pain, or use lower forms of life.

如果可以的话，请使用那些感觉不到疼痛的动物，或者用低级生物。

需要动物实验吗？ - SpeakingMax英语口语达人

If you wait until the next day, you pay a lower price but you don't get the dividend.

如果你第二天再买,买入价低,但没有分红

耶鲁公开课 - 金融市场课程节选

The Environment Agency said the Sheffield Lower Don Valley Flood Protection Project would involve repairs to existing defences, as well as "raising walls and reinforcing existing structures along a stretch of the River don between Nursery Street in Sheffield and Blackburn Brook near the M1".

BBC: South Yorkshire to get ?14m flood defences

One would presume the margins would also be lower if they don't control the overall contract.

FORBES: Icahn's Motorola Morass

Both require molds to be made and either close off the ear entirely or provide an "open fit, " letting in lower frequencies that don't need amplification.

WSJ: Conquering Retirement: Hearing-Aid Shopping Tips