It might be that yawning helps to clear out the lungs by periodically lowering the pressure in them.

打哈欠可能通过周期性地降低肺部的压力来帮助清理肺部。

youdao

Martine puts it down to, among other things, soap operas and installment plans introduced in the 1970s. Both played an important, although indirect, role in lowering the birth rate.

玛蒂娜将其归因于20世纪70年代推出的肥皂剧和分期付款计划。尽管是间接的，但两者在降低出生率方面都发挥了重要的作用。

youdao

Martine puts it down to, among other things,soap operas and instalment plans introduced in the 1970s. Both played an important9 although indirect, role in lowering the birth rate.

玛蒂娜将其归因于20世纪70年代推出的肥皂剧和分期付款计划。尽管是间接的，两者在降低出生率方面都发挥了重要的作用。

youdao

Cambodia's inability to save mothers contrasts with its success in lowering infant and child deaths.

VOA: standard.2009.11.10

Of course it's lowering your share of the company, but offsetting this is that the company is taking in money from the person who bought the shares and so it doesn't dilute you.

当然这会降低你对公司的控股,但补偿是公司增大了股本,因为人们购买股份,不会摊薄你的那份

耶鲁公开课 - 金融市场课程节选

He also praises Colombian President Avaro Uribe for lowering his country's coca production, resulting in less cocaine passing through Mexico into the United States.

VOA: standard.2010.07.02

On this day, the One World Trade Center workers were lowering in to place the very first ring that would support the spire, or antenna, of the tower.

FORBES: A Tour Of One World Trade Center

What would make payers and patients want to pay such exorbitant prices for cholesterol lowering in the face of generic statins with their track record of safety and efficacy?

FORBES: Will Sanofi & Regeneron Ride ODYSSEY Into Riches?

It could also coax Fannie and Freddie into operating counter-cyclically by building capital in good times and lowering requirements in falling markets.

ECONOMIST: Reining in Fannie Mae and Freddie Mac