另外，还有一种方法可以使流体电池重新充电：将释放电量的电解质溶液抽空，然后重新充入溶液。

There is, though, another way to recharge a flow battery: pump out the discharged electrolyte and replace it with a solution that has been recharged elsewhere.

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使用”一进两出“原则 ：拿入一件物品的同时，扔掉另外两件。

Use the “one in, two out” rule. The rule: whenever you bring in an item, you have to throw away two other items.

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另外一些学校只要小学生们不在上课时间使用，允许他们携带手机入校。 但是多数学校还是希望孩子们在每一堂课开始之前，把那些电子装备暂时存放在储物柜中或收好在袋子里。

Others allow pupils to carry phones if they do not use them during the school day, but most expect electronic equipment to be deposited in lockers or put in zipped bags at the start of each lesson.

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