技术员将在下周安装新的空调机组。

The technician will ___install the new air conditioning unit next week.

我们需要在会议室里安装一套更好的音响系统。

We need to ___install a better sound system in the conference room.

他们雇人来安装一套家庭安全系统。

They hired someone to ___install a home security system.