劍橋詞典If you are knee-deep in a substance , it reaches up to your knees . 齊膝深的 We walked through the field , knee-deep in mud . 我們趟著沒膝的泥水走過田野。 informal very involved in a difficult situation or large task 深陷其中的；忙著的 I'm knee-deep in paperwork . 我忙於應付文書工作。 返回 knee-deep