在沙漠中，汽车必须自带卷扬机和钢绳，这样一旦汽车陷入沙地可以自救。
In the desert, the vehicle must bring their own rope and hoist, so that once the car into the sand can save themselves.
默认地，它自带总是能立即返回成功结果的外部程序；实际的许可检查是可选的，并且必须被显式启用。
By default, it's shipped with the external program always returning success instantly; the actual license check is optional and must be explicitly enabled.
摄影师必须携带灯具，自带或寻找电源，而且还要将环境光线和人工灯光天衣无缝的结合到一起。
You lug along lights, must find or bring power sources, and then seamlessly integrate ambient and artificial light sources.
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