sponge off
揩油
釋義：
To get money, food, etc. regularly from other people without doing anything for them or offering to pay
揩油；白吃白喝
例句：
Britons used to grumble that layaboutssponged offthe welfare state; now they are more likely to say help is too stingy.
英國人過去常抱怨福利制度會滋生懶漢，而現在他們更有可能説救助太過吝嗇。（來源：English Digest）
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