If your tooth enamel is porous, the colors contained in beverages easily absorb into it and your teeth lose their natural whiteness.

如果你的牙釉质不坚固，饮料的颜色就很容易渗入牙釉质，牙齿就失去了自然的洁白。

youdao

That step,he said, shows it is designed to absorb those areas into Russia, both de facto and de jure, which is why Russia started the war (in August), Utiashvili said.

VOA: standard.2009.04.30

"If all the investment now will be done in the city where there are huge needs to reconstruct all the infrastructure, where there will be a lot of demand in terms of construction work, then you will have again a pull effect from the rural areas back into a city that is not ready to absorb a lot more people than they have today."

VOA: standard.2010.07.16

Two trials have produced cells that could convert 17% of the sunlight they absorb into electricity.

FORBES: A Startup Charts A Path To Make Cheaper Solar Cells

So what we want to do is fine-tune that special characteristic of the light so it shines back and it doesn't absorb into the material and cause damage.

NPR: Using Science to Rescue Art

One reason China is setting up its sovereign wealth fund now is that huge trade surpluses and a vast reserve of foreign exchange mean it simply has too much cash to absorb into its own economy, and capital controls keep it from investing in liquid assets like American T-bills.

FORBES: Tracking The Sovereign Funds