Buying a second-hand car can be a risky business.是什么意思？

Buying a second-hand car can be a risky business.

买二手车可能有风险。

buying

n. 购买；v. 购买，购得( buy的现在分词 )，做出牺牲以获得，够支付，买通；

例句
Up to two thirds of 14 to 16 year olds admit to buying drink illegally...
14到16岁的青少年中多达2/3的人承认非法买过酒。

car

n. 汽车，车厢，轿车；

例句
His car was held up and he was abducted by four gunmen...
他的车遭遇拦劫，随后他被4名持枪歹徒劫持。

can

aux. 能够，可以，有机会；n. 金属罐，一听，金属容器；vt. 将…装罐保存，炒…鱿

例句
When I listen to her play I can hear a new Nigel Kennedy.
从她的演奏中我听出了新一代的奈杰尔·肯尼迪。

be

v. 是，有，存在，做，成为，发生；aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质；

例句
The older child should be able to prepare a simple meal...
那个年纪稍大的孩子应当会做一顿简单的饭菜。

risky

adj. 冒险的，危险的，大胆的，<口>近乎猥亵的；

例句
It can be a dangerous course of action which might be sound in theory but — ahem — perhaps a trifle risky in practice...
这可能是一次危险的行动，在理论上听着无缝可击，但——呃哼——真做起来却可能有点冒险。

business

n. 商业，交易，生意，事务，业务，职业，行业；

例句
Many men still have difficulty accepting a woman as a business partner...
许多男性仍然无法接受女性商业伙伴。