The danger is likely to continue, they say, until the waves reach an inland area of hard rock which will not be eaten as limestone is.

他们说，这种危险可能会持续下去，直到海浪到达内陆坚硬的岩石区域，这些地方的岩石不会像石灰岩那样受到侵蚀。

youdao

Back in the 1900s, some stop signs were yellow because it was too hard to see a red sign in a poorly lit area.

早在20世纪初，一些停车标志是黄色的，因为在光线不好的地方很难看到红色标志。

youdao

We enrolled him in our local area educational agency preschool, where the teachers worked hard to help Skyler connect with the world around him.

我们为他在当地的教育幼儿园报了名，园内的教师努力地帮助斯凯勒与他周围的世界建立联系。

youdao

Then,a hard cast may be put around the area of the break to hold the bone in place while it heals.

VOA: special.2009.02.04

I think that it makes it hard for that particular area of scientific research to go forward.

我想在这方面的科学研究很难推进。

生物克隆是热点问题 - SpeakingMax英语口语达人

They seem like the hard rock maple trees often found in that area, nothing can make them move.

VOA: special.2009.03.07

And he said the planned hard surface area had been reduced by 25%, but in other respects the application remained the same as that submitted in 2011.

BBC: Redhill Aerodrome in revised Surrey runway bid

It's not a hard hat area for nothing.

BBC: World's railway future born in Edinburgh test lab

It's hard to find area stops large enough to accommodate, say, 80 West Point cadets.

WSJ: Ever More Pointing, Talking: The Rise of New York City Tour Guides