因此，远程表的定义允许列可以为空这一点非常重要。

Therefore, it is very important for the remote table definition to include column nullability.

youdao

这一点在你需要扫视左列标签时可以表现出来。

This can be seen when you try to scan the left column of labels.

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要做到这一点人们需要了解的数据列。

To do this one needs to understand the columns of data.

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而是一些列的你需要每天进步一点点的事情！

They are a series of small steps you take each day.

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这列火车九点钟驶离伦敦。

The train leaves London at nine.

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这一列是。这是23点59分去昆明的直快。

This one is. it 's the 23:59 through express for Kunming.

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下一列火车将在今晚7点离开。

The next train leaves at 7 o'clock this evening.

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下一列火车将在今晚7点离开。

The next train leaves at 7 o'clock this evening.

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