We can't afford a bicycle, let alone a car.是什么意思？

We can't afford a bicycle, let alone a car.

我们连自行车也买不起, 更不用说汽车了.

we

pron. 我们，咱们，笔者，本人，朕，人们；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

afford

vt. 买得起，担负得起，提供，给予；

例句
My parents can't even afford a new refrigerator...
我父母甚至买不起一台新冰箱。

bicycle

n. 自行车，脚踏车；v. 骑自行车；

例句
Pete once bought the boys a bicycle cheap off the back of a lorry.
皮特有一回给孩子们买了一辆便宜的老鼠货自行车。

let

允许，任由，让，随，假设，出租；

例句
'And now, without further ado, let me introduce our benefactor.'
“下面，闲话少说，让我来介绍一下我们的赞助人。”

alone

adj. 单独的，独一无二的，独自的；adv. 单独地，独自地，孤独地，只，只有；

例句
Living alone is an acquired taste.
独处是一种修得的境界。

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。