VOA慢速英语:Bigwig and Top Banana

短语讲解：

1. Some expressions describe people who are important, or who atleast think they are. One such expression is bigwig.

at least 至少
例句：He smoked at least half a packet of cigarettes a day.
他每天至少抽半包烟。

2. The size of a man's wig depended on how important he was.

depend on 依靠;信赖
例句：You can depend on him.
你可以信赖他。

3.  Big wheels give the orders. Other people carry them out.  Asin many machines, a big wheel makes the little wheels turn.

carry out 实现
例句：He would let her manage everything and carry out all hernotions. 
他会让她安排一切，实现她所有的想法。 

4.  It probably comes from an expression used for many years bypeople who fix parts of cars and trucks.

come from　来自，来源于
例句：Ambient noise may come from any direction. 
外界噪声可以来自任意方向。

5. Yet the expression can also be used to describe the top personin any area.

be used to　习惯于
例句：This will be used to multiply each term. 
它被依次用来乘每一项。 

6. If the kingpin is removed, the business or project is likely tofail.

be likely to 有...的倾向
例句：Smoker who Inhale be likely to become addicted to nicotine 
吸烟的人容易对尼古丁上瘾。.