posteriors
[pɒs'tɪərɪrz]
n.
身体后部，臀部( posterior的名词复数 );
例句:
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Scientists get up off your posteriors and start work!
来自BBC
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Neither he, nor his posteriors from generation to generation, shall sit upon it ony mair.
来自Sir W. Scott
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City superviser Scott Wiener wants nudists to cover the seats of public benches or seats before parking their bare posteriors.
来自BBC