bowels ['baʊəlz]

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附加级

n.肠，内脏，内部；肠( bowel的名词复数 )；内部，最深处

Salts is a medicine that causes movements of the bowels. 泻盐是一种促使肠子运动的药物。来自《简明英汉词典》
The cabins are in the bowels of the ship. 舱房设在船腹内。来自《简明英汉词典》