Once you are done demonstrating whatever concept was in the textbook, you throw away the pipe cleaners, the straws, the cardboard tubes.

一旦你完成了课本展示的内容，你就会扔掉这些烟斗通条、吸管和硬纸管。

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Those cardboard tubes make terrific cable tidies!

这些纸板管制造出了了不起的线缆收齐器！

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Crackers arc cardboard tubes with a small present, a joke on a piece of paper and a paper hat inside.

饼干弧纸板管和一个小礼物，一个笑话在一张纸和一个纸帽子里面。

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It is composed of two cardboard tubes, a smaller one on top of a bigger one.

ECONOMIST: American contemporary art

Wiltshire Police said the ashes had been kept in two cardboard tubes which were inside a bag near the fireplace where Mr Tye had liked to sit.

BBC: Veteran George Tye's ashes stolen from Melksham home

The show used the shabbiest possible effects, plus a fly-by-night attitude toward narrative logic, although its low budget was as much a feature as a bug: it made something out of nothing, much the way Abed and Troy constructed their Dreamatorium engine out of cardboard tubes and a funnel.

NEWYORKER: Fantastic Voyage