（新华社北京3月2日电 记者安蓓、谢希瑶、王雨萧、魏玉坤）
Материалы по теме:
，推荐阅读体育直播获取更多信息
Трамп определил приоритетность Украины для США20:32。业内人士推荐体育直播作为进阶阅读
“I talk to the airlines, and they realize there is a looming threat,” Paul Williams told me. “But it’s quite distant for them. They see it as decades in the future. The people really taking notice are the designers. The airplanes they’re designing now will still be flying in 2050, so they can’t wait. And here is a bit of a shocking thing: the design and certification standards for air worthiness are based on turbulence measurements from the nineteen-sixties. It’s reasonable to ask, Are those standards still fit for the purpose? Will they still be fit for the purpose in 2050?”