know better
US /noʊ ˈbɛtər/
UK /noʊ ˈbɛtər/
1.
やめるべきだ, もっとよく知っている
to be wise or experienced enough not to do something stupid or wrong
:
•
You should know better than to talk to strangers.
見知らぬ人と話すのはやめるべきだ。
•
She's old enough to know better than to lie.
彼女は嘘をつくのはやめるべきだと知るのに十分な年齢だ。