Warning: file_put_contents(/www/wwwroot/zidian/diubi.cn/cache/1923fd09c378218e5b4a53039515f22a.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/diubi.cn/index.php on line 59 unproved例句_unproved英汉例句_unproved双解例句_果味酸柯林斯词典
But not everyone did this problem, and fewer did it completely correctly, and it relied on an unproved exercise.So it's worth repeating here. 但是并不是每个人都做了这个习题，只有少数人做对了，而且这个习题还靠另一个没证明的习题做基础，所以值得再提一次。