这种想法是建立在塑料菜板可以比木菜板更加容易彻底清洁的假设之上的。

It was assumed that plastic could be cleaned more easily and more thoroughly than wood.

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洗发水和护发素是另外一个问题，在我既有的那些塑料包装的用完后买了些木包装的。

Shampoo and conditioner presented another issue. When my existing plastic bottles ran out I bought some in blocks.

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之后，在1994年，研究者们宣称木菜板上保留的细菌比塑料菜板更少。

Then, in 1994, researchers declared that wood retained fewer bacteria than plastic.

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