Because Hibernate doesn't know what specific class you're after, it has to read every column (including the discriminator column), then determine which class to instantiate and, finally, populate it.
因为Hibernate不知道您要查询哪个特定的类，所以必须读取每个列(包括discriminator类)，然后才能决定要初始化哪个类，最后再填充它。
Finally the teacher calmly told me this title is the first question before exam, then asked me after class to explain to him why I answer on the paper is accurate.
最后老师平静的告诉我这个题目就是前天考试的第一题，接着要求我在下课后向他解释为什么我试卷上的答案准确无误。
At the class meeting, there was a long, embarrassing silence after the teacher's opening remarks. Finally Jack broke the ice by raising a question.
班会上，在老师的开场白之后，出现了长时间的，令人窘迫的冷场，最后，杰克提个问题，打破了僵局。
You know that beautiful girl who sits ahead of me in English class?She keeps turning me down for dates, but I finally got a foot in the door today: she met me for coffee after class.
你知道英语课坐在我前面那个很漂亮的女孩子吗?我请她出去玩，她老是拒绝我。可是，今天我算是迈出了第一步：她下课后和我一起喝了咖啡。
She keeps turning me down for dates, but I finally got a foot in the door today: she met me for coffee after class.
可是，今天我算是迈出了第一步，她下课后和我一起喝咖啡了。
After much discussion, five of us in the class have finally decided to go to Europe for three weeks.
我们班上五个同学讨论了好久，最后终于决定去欧洲三个星期。
After much discussion, five of us in the class have finally decided to go to Europe for three weeks.
我们班上五个同学讨论了好久，最后终于决定去欧洲三个星期。
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