由于当时正处于黄金时机,当他刚熟悉了交易领域时,他获得了巨大的成功.他的财富迅速增长,不久之后他成了百万富翁.
hardly...when是一个固定搭配,“刚一...就...”的意思.举几个例句给你就容易理解用法：
Hardly had the foot ball game begun when it started raining.
足球比赛才刚刚开始就下起雨来.
Hardly have I get home when the telephone rings.
我一到家电话铃就响了.