Click to follow Londoners have been left scratching their heads after mysterious"black hole"clouds appeared above the capital.
神秘的"黑洞"云层在伦敦上空出现后，伦敦人一直在挠头。
The unusual cloud formation had been spotted in over London this morning,at about 8.30am,after Londoners had enjoyed sizzling temperatures the day before.
今天早上8:30左右，在伦敦上空发现了这种不同寻常的云层形成，此前一天伦敦人享受了高温天气。
Incredible photos showed huge"dents"in the clouds,with one witness describing it as looking"like peaks of whipped meringues".
令人难以置信的照片显示，云层上出现了巨大的"凹痕"，一名目击者形容它看起来"像是被鞭打的蛋白甜饼的顶峰"。
Another viewer,who spied the cloud formation over Thornton Heath,Croydon,said the"creepy"cloud looked like a black hole.
另一位观察者发现了克罗伊登桑顿荒地上空的云层，他说这个"令人毛骨悚然"的云层看起来像一个黑洞。
According to the Met Office the strange formation looked like Asperitas clouds,which translates approximately as"roughness".
根据英国气象局的说法，这个奇怪的形成物看起来像北极星云，大致翻译过来就是"粗糙"。
Characterised as looking dark and storm-like,the ominous looking clouds are common in the United States and typically seen after thunderstorms.
特点是看起来黑暗和风暴一样，不祥的看云是共同的在美国和通常看到雷暴之后。
takes the appearance of rippling waves.
英国气象局表示:"Asperitas(以前被称为 undulaatus Asperitas)是一种独特但相对罕见的云形成物，呈现出波浪状的外观。
"These wave-like structures form on the underside of the cloud to makes it look like a rough sea surface when viewed from below."
"这些波浪状的结构形成于云层的下面，从下面观看，它看起来像一个粗糙的海面。"
Forecasters added that although the cloud formation can appear after thunderstorms,it can also be brought on by"calm environments"
气象预报员补充说，虽然雷暴之后会形成云层，但是"平静的环境"也会带来云层的形成。
来源：https://www.standard.co.uk/news/london/londoners-baffled-as-black-hole-clouds-appear-above-capital-a4159181.html
注：此时特朗普正在英国伦敦进行访问。
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