The first barrier is guarded by young girls.

第三道路障是一些三四岁的娃娃。

youdao

The paint system on any boat is an important first barrier against corrosion.

任何船只上的涂料体系都是抗蚀的第一道屏障。

youdao

So far the first barrier, which is the fuel cladding, has apparently failed, because they are detecting cesium.

目前第一层屏障，也就是燃料包层，明显已经失败了因为他们已经检测到了铯。

youdao

And,he was proud of being the first African-American to break the color barrier in a major opera house.

VOA: special.2010.03.07

The first barrier Sullivan pointed to was the very idea of machine data itself.

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The first barrier to remove is the interminable wait for DOE export licenses.

FORBES: Economics 101 Comes to the U.S. Department of Energy: Exporting LNG is Good

The first barrier to progress is our willingness to acknowledge that this host of subtle factors shapes our choices.

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