freeloaders
n.
不速之客，揩油的人( freeloader的名词复数 );
例句:
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But, as its members say sternly, it is not a site for dating, or for freeloaders.
然而, 就像使用者坚决表示的, 这不是个交友网站, 也不是让人拿来找白吃白喝旅游的.
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We might have more freeloaders, but would still come out ahead.
来自SA
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I thought you conservatives hated freeloaders.
来自SA
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But as freeloaders exploit the do-gooders, everybody's payoff from altruism shrinks.
来自SA