install/ɪn'stɔːl $ -'stɑːl/

v. place sth in position and make it ready for use

v. [T] 安装：We're planning to install an air-conditioner. 我们计划装一个空调。

◇He helped me install the software. 他帮我安装了软件。

构词in- + stall （安置）