出典:Wiktionary
A little learning is a dangerous thing.
There's not the least danger.
Explaining the risks is very important.
It is very dangerous there.
This is very dangerous now.
It is dangerous to take anything on blind faith no matter what it is.
I think that it is very dangerous.
There is no risk in this enterprise.
That is a dangerous item depending on how it is used.
I think that it is extremely dangerous.