a piece of heavy metal that is lowered to the bottom of the sea, lake etc to prevent a ship or boat moving

锚:

The ship was at anchor.

那艘船抛锚停泊着。

We dropped anchor a few yards offshore.

我们在离岸几码远的地方抛锚停航。

The next morning, they weighed anchor (=lifted the anchor) and began to move south again.

第二天早上，他们起锚，又开始向南航行。

[especially AmE] someone who reads the news on TV and introduces news reports

〔电视〕新闻节目主持人，主播;

Dan Rather, anchor of the CBC Evening News

哥伦比亚广播公司《晚间新闻》主持人丹·拉瑟

someone or something that provides a feeling of support and safety

支柱，靠山:

Dad was the anchor of the family.

爸爸是家里的支柱。

[I,T] to lower the anchor on a ship or boat to hold it in one place

抛锚，停（船）;

Three tankers were anchored in the harbor.

三艘油轮停泊在港口。

[T usually passive] to fasten something firmly so that it cannot move

使稳固，使固定:

The shelves should be securely anchored to the wall.

搁板应牢牢固定在墙上。

be anchored in sth, to be strongly connected with a particular system, way of life etc

扎根于某种体系〔生活方式等〕:

John's outlook has always been anchored in the political mainstream.

约翰对事物的看法一直以政治主流为基点。

[T] to provide a feeling of support, safety or help for someone or an organization

支持，保护，帮助:

Steve anchors the team's defense.

史蒂夫在该队的防线上一柱擎天。

Her life was anchored by her religion.

她的生命依靠宗教信仰支撑着。

[T] [AmE] to be the person who reads the news and introduces reports on television

主持〔电视新闻节目〕:

Collins anchors the 6 o'clock news.

柯林斯主持 6 点钟的新闻节目。