Each of these is required to be populated in your file, and must have a value in order for the custom binder to work correctly.

这些元素都需要在您的文件中进行填充，它们必须具有值以便自定义绑定器能正确工作。

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The first known use of "zero-gravity" is from Jack Binder (better known for his work as an artist) in 1938, and actually refers to the gravityless state of the center of the Earth's core.

1938年杰克·宾得（作为一个艺术家而闻名）第一次使用“零重力”，事实上是指地球核心的无重力状态。

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Lee believed that it would be a great idea for students to put their work online rather than keeping it stored in a binder.

FORBES: Seelio Is A Great Way For Students To Build Their Portfolios