A career in medicine is often seen as a highly desirable profession.

desirable 是由动词 desire（渴望、想要）加上形容词后缀 -able 构成的形容词，表示"值得拥有的""令人向往的"。-able 后缀表示"能够...的""具有...性质的"，所以 desirable 字面意思是"能够被渴望的"，引申为"理想的""令人满意的"。