look out for number one
US /lʊk aʊt fɔr ˈnʌm.bər wʌn/
UK /lʊk aʊt fɔr ˈnʌm.bər wʌn/
1.
只顾自己, 自私自利
to always put your own needs and interests before those of other people
:
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In this competitive industry, you really have to look out for number one.
在这个竞争激烈的行业，你真的要只顾自己。
•
She's always been someone who looks out for number one, even at the expense of others.
她一直是个只顾自己的人，甚至不惜牺牲他人。