剑桥词典If you are knee-deep in a substance , it reaches up to your knees . 齐膝深的 We walked through the field , knee-deep in mud . 我们趟着没膝的泥水走过田野。 informal very involved in a difficult situation or large task 深陷其中的；忙着的 I'm knee-deep in paperwork . 我忙于应付文书工作。 返回 knee-deep