verb · to start an engine or boot up a computer or electronic device

电脑开机后需要几分钟加载程序。

verb · to begin shooting a film or television show

这部新电影计划于下个月在上海正式开机。

verb · to press the Ctrl-Alt-Delete key combination to reboot or access system functions

当电脑系统失去响应时，用户可以通过按下开机热键来尝试重启。