McCulloch and his team asked four healthy people and one with cancer to blow into plastic tubes.

麦卡洛克和他的团队让四名健康的人和一名癌症患者对着塑料管吹气。

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Plastic tubes with secure tops are better than glass because they are lighter, and do not break as easily if mishandled.

有密封盖的塑料管比玻璃管好，因为它们更轻，而且如果处理不当也不容易破裂。

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He opens the plastic tubes and unrolls blueprints of the cell block.

他打开塑料管，铺开监狱监牢区的设计图。

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But modern drip irrigation uses underground computerized probes and long plastic tubes to slowly release water over long distances.

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People sell everything here - vegetables, cooking oil packed in 50ml (yes 50ml) plastic tubes, sugar by the tablespoon - anything really.

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He has proposed deploying a million plastic tubes, each about a hundred metres long, to roil the water, which would help it trap more CO2.

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