I'm not convinced he's on the level.
我不相信他是真诚的。
He convinced me he was right.
他使我相信他是正确的。
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.
我不完全信服这一论据。
I'm convinced there's a jinx on this car.
我看这辆汽车是灾星。