I'm not convinced he's on the level.

　　我不相信他是真誠的。

　　He convinced me he was right.

　　他使我相信他是正確的。

　　I'm still not totally convinced that he knows what he's doing.

　　我仍然不完全相信他明白自己在干什么。

　　I am not altogether convinced by this argument.

　　我不完全信服這一論據。

　　I'm convinced there's a jinx on this car.

　　我看這輛汽車是災星。