What if the problem is so big that I cannot help my audience solve it? p.
问题很难，我无法帮助听众解决，怎么办？
There were significant differences in big activity sport, fine sport, individual communication area(P<0.01).
各能区发育以大运动、精细运动、个人交往能区发育商差异显著，P<0.01。
Our school has a big playground. We usually have p.
我们的学校有一个大大的操场，我们经常在里面上体育课。
Our school has a big playground. We usually have p.
我们的学校有一个大大的操场，我们经常在里面上体育课。
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