An empty cell has no value associated with the cell's key.

一个空单元没有与单元的键相关联的值。

youdao

Leave the primary key empty and click Next.

留下空的主键，并点击Next。

youdao

For host keys, you probably don't want a passphrase for the key, so you can just press Return to use a blank (empty) passphrase.

对于主机密钥，您可能不需要密钥密码，所以您可以按Return使用空密码。

youdao

Right now it's got that second key word there called pass, which is just Python's way of saying there's an empty body in here.

现在我在完善它的一个简单部分,但是首先，类是用来干什么的呢？,把类认为是可以创建一个。

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