The squad leader sucks from a tube inside his helmet that connects to a water pack hanging from his back.

班长用头盔内的吸管吸了几口水，这根管子与悬挂在他背上的水袋相连接。

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For example, we can pack a suitcase with flashlights, a radio, food, drinking water and some tools.

例如，我们可以用手电筒、收音机、食物、饮用水和一些工具来装满一个手提箱。

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According to the conventional view, liquid water has a similar, albeitless rigid, structure, in which extra molecules can pack into some ofthe open gaps in the tetrahedral arrangement.

根据传统观点，液态的水分子也是类似排列，尽管不那么严格，额外的分子会被包进四面体孔隙里。

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One depicted survivors wading through water, with a pack of sharks approaching.

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The apparatus he used, known as the Jetlev R200, is a water-propelled jet pack that can shoot a person 30 feet into the air and run for some 4 hours.

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Each of us wore a lightweight pack, with a water supply fitted to a thin plastic tube to suck on while we ran.

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