having a beneficial effect on
对…有好处
- 
                                                
smoking is not good for the lungs .吸烟对肺不好。
 
reliably providing
总能提供的
- 
                                                
they found him good for a laugh .他们发现他总能逗人发笑。
 
sufficient to pay for
足够支付的
- 
                                                
his money was good for a bottle of whisky .他的钱够买一瓶威士忌。
 



















