installation
noun uk/ˌɪn.stəˈleɪ.ʃən/ us/ˌɪn.stəˈleɪ.ʃən/
(EQUIPMENT/FURNITURE)
C1 [ U ]安装
an occasion when equipment, furniture, or a computer program is put into position or made ready to use
Do you have to pay extra for installation? 你需要额外付安装费吗？
You will receive a message confirming correct installation of the program. 你会收到一个信息确认程序已正确地安装好了。
(PLACE)
[ C ]（尤指用于军事目的的）设施
a place where there are buildings and equipment that have a particular, especially military, purpose
a nuclear installation 核设施
The military still have several bases and installations on the island. 军方在岛上仍有几处军事基地及设施。
(JOB)
[ U ]正式任命，正式就职
an occasion when someone is put in an important job or position
The installation of the new archbishop will take place in January. 新任大主教的就职仪式将于一月举行。
(ART)
[ C ]装置艺术（除物体外还运用声音、动作或空间来创作临时艺术品的现代雕塑形式）
a form of modern sculpture where the artist uses sound, movement, or space as well as objects in order to make an often temporary work of art