on trust
1.without proof or close examination不加深究地
I took all he said on trust,for I thought he was telling the truth.他说的我都相信,因为我认为他是在讲真话。
2.in credit赊帐
We have known the family for years and you may safely supply the goods on trust.我们认识这一家已有多年了,你可以放心地赊销商品。