而且这悠长的暑假还扮演着记忆橡皮擦的角色，据报道在很多课程里，孩子们平均会忘掉一个月的课程内容，而数学课忘掉的课程几乎是平均数字的三倍。

But the long summer vacation ACTS like a mental eraser, with the average child reportedly forgetting about a month 's-worth of instruction in many subjects and almost three times that in mathematics.

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