1．buck n.<俚>一美元
例句：
People want to make a quick buck.
人人都想赚容易钱。
2．collateral n.附属担保物；支亲；副保
例句：
Cousins are collateral relatives.
表堂兄弟姊妹都是旁系亲属。
3．I'm taking your skateboard as collateral.
我拿你的滑板鞋作为抵押品。
这里as是“作为”的意思。
例句：
As a cub reporter he would learn the facts of life in the newspaper world.
作为一名初出茅庐的记者，他要了解报界生涯的内幕。
Just as writing a fiction,programming is a process of creating art.
如同写小说一样，程序设计也是一个艺术创造的过程。
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