Using the analogy of a house to represent the system, you decide to carve out a piece of your front door to give your pets' easy access to the outdoors.

我们可以使用房子来代表该系统，您想要在前门上开出一小块作为您的宠物的通道。

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That makes it easier to get in and out, for access is from the front via a large, transparent door-a traditional means of ingress for bubble cars.

这样方便上下车，因为出入是经由大型透明门(泡泡车传统意义上的入口)从前面进行的。

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A lockable panel provides access to a front cooling fan, and a lockable, shielded door protects and affords easy access to the drives.

可锁定面板内装配前散热风扇，还有可锁定屏蔽门不仅保护驱动器，还可以轻松设置驱动器。

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All of the new line of computers boast a 250-watt power supply, a sliding front door allowing for easy access to four USB ports and dual optical disk bays.

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Master Lock sells a garage-door opener with a built-in fingerprint scanner, the Kwikset SmartScan Deadbolt will open up your front door with another finger swipe and Schlage's LiNK door locks allow owners to give anyone access to their home by punching a code into a computer keyboard or mobile phone's keypad.

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The only access to the shed was by the vandalised front door which was where the fire had started.

BBC: Teenager fire deaths accidental