With a piece of porous separator material (it looks like white trash-bag plastic) between them, the positive and negative electrodes are sandwiched together into stacks.

用一块多孔材料(看起来像白色垃圾袋塑料)放在正极和负极中间，像块三明治。

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He tied the ends of the plastic bag together.

他把塑料袋的两头系在一起。

《柯林斯英汉双解大词典》

I am not a plastic bag!

我不是一个塑料包！

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Then cover the top of the pot with a see-through plastic bag.

VOA: special.2011.04.26

The astronauts made the connector from a plastic bag, cardboard and tape.

VOA: special.2009.07.22

Store the unused part in the refrigerator in a plastic bag.

VOA: special.2009.04.28

Ms. JAMES: And I brought the note back with a tiny little bag, little plastic bag or something with some clothes in it.

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In addition to the information he provides on his site, Keller also supplies toolkits for teachers, complete with lesson plans related to plastic, and is the creator of the Bag Monster, a character that visually represents the plastic bag problem.

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He is introducing a 5p plastic bag tax next year to try to tackle the scourge of plastic bags blowing around the countryside, yet this survey suggests plastic bags may not be the culprit some claim.

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