How long will the connection of the telephone take? ie How long will it take to install a telephone and connect it to the exchange?
安装电话机与总机接通要多长时间?
To minimize the risk of burglary, install a good alarm system.
安装可靠的报警设备以减低被盗的风险.
She installed her air-conditioner without help.
没请别人帮助,她自己安装了空调。