当你将醋和小苏打混合起来时，会产生泡沫。

When you mix the vinegar with baking soda, it will foam.

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她们的做法是将醋摸到头发上，然后花时间在太阳下去晒着。

To do that, they would apply vinegar on their hair and then spend time in the sun.

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将醋酯纤维素溶解于丙酮中(丙酮中含有少量的水，最大含水量为丙酮重量的10%)而形成纺丝液。

The spinning solution is made by dissolving cellulose acetate in acetone containing a small amount of water (up to 10 percent).

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