“任免权”常见的英文表达是 "the power of appointment and removal" 。
“appointment”有“任命;委派”之意 ,“removal”表示“免职;撤职” ,二者组合能准确传达“任免权”的含义。例如:The President has the power of appointment and removal of high-ranking officials.(总统有任免高级官员的权力。 )