We must make sure that no one is left behind.

我们必须确保没有人落在后面。

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When we move forward, we must make sure that no one is left behind.

在我们前进的时候，我们必须保证不让任何人掉队。

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U. S. troops in Iraq travel in groups of armored vehicles, usually Humvees, and procedures are in place to keep track so no one is left behind.

在伊拉克的美军士兵以通常是悍马武装车辆群，实施了措施从而保证没有人掉队。

youdao

To learn more about now No Child Left Behind is working in one school, we've reached Tajah Gross.

NPR: A Principal's View of 'No Child Left Behind'

One of the tenets of No Child Left Behind is that it requires states to report test results for individual racial and ethnic groups, a process called disaggregation.

NPR: Mixed Report Card for U.S. Schools

And so, as a part of No Child Left Behind, there is a process where the school will go into a year one of needs improvement, a year two of needs improvement.

NPR: A Principal's View of 'No Child Left Behind'