The "not used" field is always empty, so it's probably left over from a previous application and can be safely ignored.
“未用”字段总是空的，因此可能是以前的应用程序留下来的，完全可以忽略。
Even if the database is newly created and still empty, system tables and views are always present, so you can use them as follows.
即使数据库是新创建且仍然为空的，也总是会带有系统表和视图，因此，您可以按以下方法使用它们。
Just like our class, learning to Newton's first theorem, we always say, that Newton, Galileo and Einstein, how is so empty, net what theorem, to torture is stuffed around us!
就像我们班，在学牛顿第一定理的时候，我们总是说，这牛顿、伽利略，还有爱因斯坦，怎么都那么空呢，净整出个什么定理，是吃饱了没事干来折磨我们啊！
Hotel loos are always empty so if there's one next door nip in.
宾馆的厕所通常都比较空，可以找到偏门溜进去。
This post is too important, so in the past year, the whole seven south where he Ephraim hex mansion always purple as a senior is always empty.
这个职务过于重要，所以或过去地整整七年之中，南玥所或地紫莲妖术府总学长一职一直都似空着嗄。
She peered at the empty bed, as it is to say: true oddness, but also why we live in so long, the bed is always empty, why don't arrange people in school?
她望了望那张空床，指着它继续说：当然还真奇怪，为啥我们住进来这么久，那张床都始终空着，学校为啥不安排人进来住呢？
The house stood only a little way away from our home. Its garden was always neat and tidy, the crocuses and lilacs planted so carefully, the lawn so even and lush and yet, it seemed to stand empty.
那栋房子离我家不远，房前的花园是整齐干净的，上面精心种植着藏红花和丁香，草坪平坦而茂盛，而且似乎一直空无一人。
The house stood only a little way away from our home. Its garden was always neat and tidy, the crocuses and lilacs planted so carefully, the lawn so even and lush and yet, it seemed to stand empty.
那栋房子离我家不远，房前的花园是整齐干净的，上面精心种植着藏红花和丁香，草坪平坦而茂盛，而且似乎一直空无一人。
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