Sure. They can be stuck in the gravel. They make the tank more beautiful and provide food and shelter for the fish.

当然要。它们可以在碎石里盘生、美化水箱并为鱼类提供食物和遮蔽。

youdao

We expect to be able to provide a family of 4-5 with adequate shelter, new clothing, plenty of food, health care and education, while also saving for our retirement.

我们希望能提供一个容纳4 - 5口之家的居住场所、新的衣服、充足的食物、健康保健和教育，同时还有退休后的积蓄。

youdao

Forests are very important because they provide shelter and food for birds, animals and insects.

森林之所以重要，是因为它们为鸟类、动物和昆虫提供了居所和食物。

youdao

The United States has already pledged But the United Nations says it needs no less that $543 million to provide shelter,food, water and medical care for those affected by the war.

VOA: standard.2009.06.03

The result, after enough discharges, is that a reef can no longer provide food and shelter for animals and plants, and may well lose its ability to protect the coastline.

ECONOMIST: What price coral?

And the deserted, debris-strewn streets of New York will provide ample food and shelter for the lucky few that survived, he added.

FORBES: UPDATED: Rat Invasion? Will Subway Rodents Move Into Flooded NYC Neighborhoods?

The reaction of both the public and the government was to provide a camp offering them food and shelter and then to let them slip in unnoticed in their quest for a better life.

ECONOMIST: France, race and immigration