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N-PLURAL
耻骨区；私处；（尤指）性器官
Someone's loins are the front part of their body between their waist and legs, especially their sexual parts.
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N-VAR
（动物的）腰肉，脊背肉
Loin or a loin is a piece of meat which comes from the back or sides of an animal, quite near the tail end.
例句
Heat the honey and brush it on to the outside of the loin.
将蜂蜜加热后涂抹在腰子的表面。
...roast loin of venison.
烤鹿腰肉
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PHRASE
准备采取（困难或危险的）行动
If you gird your loins, you prepare to do something difficult or dangerous.