深信用英文怎么说？

conviction: 深信

例句与用法:
1. I have the conviction that he is right.
我深信他是对的。
2. I speak in the full conviction that I will win.
我深信我会赢。
3.It's my conviction (ie I firmly believe) that complacency is at the root of our troubles.
我深信自满情绪是我们各种问题的根源.

believe indeed

beleive it strongly

trust