adj.直接得来的；第一手的
adv.直接地
He have a firsthand taste of life in backward mountainous area. 他直接体验过落后山区的生活。
It can give a youngster firsthand experience in learning how to spend money. 它可以使孩子切身体验如何用钱，
We have got firsthand observations through long time efforts. 经过长期的努力我们已经掌握了第一手的观察资料。
How can we get firsthand data, if we do not infiltrate the enemy? 不打入敌人内部,怎么能得到第一手资料？
用作副词 (adv.)I learned the news about her mother's illness firsthand from Lena. 我直接从丽娜那里了解到她母亲生病的消息。
