发音与字母之间没有一对一的关系。
There is no one-to-one correspondence between sounds and letters.
未来的成功劳动者将与顾客建立一对一的关系，让他们成为自己的回头客。
The essential worker of the future will have one-on-one relationships with customers that keep them coming back.
在每个内容单元中，您可以使用一对一的关系，也可以使用一对多的关系。
You can have a one-to-one relationship between a single unit of your content or a one-to-many relationship.
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