have one end in sight的意思?

问题描述:

have one end in sight的意思?
Learning a language has much in common with learning a musical instrument. The drills and exercises a student does have one end in sight:to enable him to become a skilled performer.
第二句中"have one end in sight"是什么意思? end在此处是什么意思?in sight又是什么意思?
非常感谢:)!

have one end in sight,有一个明显的目的.end是目的的意思.in sight ad.被看到的,即明显的