The program would either be installed on the hard drive or enclosed on a compact disc.

软件被要求预装在计算机硬盘或随机光盘内。

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The chain drive RIGS are driven by the integral enclosed compound chain box and torque converter. During rig moves, the chains can be dismantled for ease of installation.

链传动钻机采用整体密闭式并车链条箱与变矩器统一驱动形式，在钻机搬家时无需拆装链条，可实现快速安装。

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Or will that world, to borrow a metaphor from the legal philosopher Ian Kerr, resemble Autopia a popular Disneyland attraction in which kids drive specially designed little cars that run through an enclosed track?

WSJ: Are Smart Gadgets Making Us Dumb?