미국과 이스라엘의 이란 공습 여파로 중동 지역 항공 운항에 차질이 이어지면서 국제 항공 노선과 항공권 가격에도 영향을 줄 수 있다는 전망이 나오고 있다. 일부 국가가 영공을 폐쇄하고 항공사들이 항로를 우회하면서 비행 시간과 연료 비용이 동시에 증가하고 있기 때문이다.
Kermit and its sister plane—another P-3 Orion, nicknamed Miss Piggy—have flown into hundreds of hurricanes since 1976 and never lost a passenger. The Air Force, in that same period, has flown thousands of hurricane flights in its Lockheed WC-130s, also without a single fatality. Both sets of planes were designed for the military: the P-3 is like a flying tank, Marks told me; the WC-130 is more like a flying barn. Commercial jets are built for lighter duty, and they try to steer clear of hurricanes. But how will they fare in a windier world?。PDF资料对此有专业解读
。电影对此有专业解读
another good example is searching through paragraphs (below), which contain some combination of keywords. here the important part is ~(_*\n\n_*), or “does not contain two consecutive newlines”, in other words, the boundary of a paragraph, so it matches paragraphs! then you can combine it with any other regex to find paragraphs that contain certain keywords, but not others. this is very hard to do with traditional regexes without writing a complex and fragile pattern that tries to match the entire paragraph structure.。关于这个话题，PDF资料提供了深入分析
// set the register to null, if it exists