a very large tub (large enough for more than one bather) filled with hot water
hot tub的用法和樣例:
例句
Eye contact can be maintained with the child, and as the Tummy Tub is transparent, the baby can be viewed from all sides. 不但可以隨時和寶寶保持眼光接觸,並因嬰兒澡桶是透明的,四面八方任何角度都可以看到寶寶。