aslongas和asfaras()hecansee,thebreakthroughingeneticengineeringwillnotcomeaboutwithinthenext20years.A.aslongasB.asfaras为什么用asfaras啊.

Question

as long as 和 as far as
( ) he can see,the breakthrough in genetic engineering will not come about within the next 20 years.
A.as long as B.as far as
为什么用as far as啊.

Answer 1

as long as有“只要”的意思.
As long as you keep working, you will get what you want.
as far as 的意思比较抽象,可以表示距离上的“远到,直到”也有“据我所知”的意思,翻译起来可根据上下文语境灵活处理.
As far as I can see, it is a perfect plan.在我看来,这是个完美的计划.