hot-water bottle
noun [ C ] uk/ˌhɒtˈwɔː.tə ˌbɒt.l/ us/ˌhɑːtˈwɑː.t̬ɚ ˌbɑː.t̬əl/
暖水袋,热水袋
a rubber container that you fill with very hot water and use to warm a bed or a part of your body
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