adv.广泛地；大规模地
He traveled extensively to escape from boredom. 他到处旅游以解烦闷。
She read extensively to keep her mind from rust. 她广泛阅读以防止脑子迟钝。
The interior has recently been extensively restored. 室内最近大规模地修整过。
Around here apple trees began to be planted extensively in1953. 从1953年起,这一带开始大规模种植苹果树。
