凸出

    tūchū

    1. Verbto protrude; to stick out

    他的膝盖骨明显凸出,坐下时有点疼。Tā de xīgàigǔ míngxiǎn tūchū, zuòxia shí yǒudiǎn téng.His kneecaps were noticeably protruding, and it was a bit painful to sit down.