Can sand flow upward in the hour glass?

时间的沙漏能倒流吗？

youdao

How can you cause mucus to flow upward and out of your lungs?

怎样才能引起黏液向上流动，离开肺部呢？

youdao

Moist air forced to flow upward around mountain tops can create lenticular clouds.

这些透镜状云是山顶周围上升的潮湿空气形成的。

youdao

The carbon dioxide, injected deep into the reservoir, basically scours the oil out of the rock and pushes it upward where it can flow into a well.

FORBES: Energy

This upward adjustment of prices to the cheaper dollar is beginning to flow through to the consumer.

FORBES: Higher Inflation Is On The Way