In other words, schemas cannot quite do everything DTDs have long been able to, while on the other hand, schemas also cannot express a whole set of further rules one might wish to impose on documents.
换句话说，模式无法执行DTD长期以来能够执行的所有操作，而从另一方面来讲，模式也无法表达人们希望对文档施加的进一步规则的完整集合。
Time gaze, let stay happy, success in hand, and your happiness, I wish a happy newlywed, good luck one hundred!
岁月凝眸，让快乐停留，成功牵手，幸福与你共白头，祝新婚快乐、百年好合！
Immediately to the New Year, wish you a backgammon, in one hand and a red envelope, with a gold ingot, pleasant goat, a blessing, good line thousands of miles, happiness all older.
新年马上到，祝你步步高，一手拿红包，一手金元宝，一路喜洋洋，一身福气罩，好事行千里，幸福万年长。
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