Definition: certain Level: B2
我男朋友说我会喜欢徒步旅行假期，但我不信。
My boyfriend says I'd enjoy a hiking vacation, but I'm not ___convinced.
我确信她在说谎。
I'm ___convinced she is lying.
我确信我将来会从这次经历中受益。
I'm ___convinced that I would benefit from this experience in the future.
