这类似于包装一个健康的快餐，放在车中作为储备，以确保您有一些合适的东西来消耗。
This is analogous to packing a healthy snack in the car as a backup, to ensure you have something appropriate to consume.
例如，如果您正在设计一个制造加工流程，您可能会喜欢对原料消耗或人工活动(例如产品包装)建模。
For example, if you are designing a manufacturing process, you may be interested in modeling materials consumption or manual activities such as product packaging.
环保主义者称，因为无需包装和运输，直饮水要比瓶装水少消耗300倍能源，而且不制造垃圾。
Environmental activists argue tap water USES around 300 times less energy than bottled water for its packaging and transport and leaves nothing for disposal.
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