change mind for a short time
在短时间内改变主意
以上为机器翻译结果，长、整句建议使用 人工翻译 。
A short time was allowed for the decision to be made but, importantly, during that time the children were allowed to change their mind at any time by moving their hand to the other box.
决定可在一段短时间内完成，但重要的是，在这段时间内小孩可以在任何时间通过把手移到另一个盒子上来改变主意。
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