adv.不付款地,免费地,白,无偿,不取分文
David gives the first consultation gratis.
戴维免费提供初次咨询。
I knew his help wouldn't be given gratis.
我知道他的帮助不会是无偿的。
What I did for you was free, gratis, you understand?
我为你所做的一切都是免费的,无偿的,你明白吗?