ash hole，原意为灰洞，因冰岛火山造成的航班延误，飞机从火山灰云小洞飞过，赋予了ash hole新的含义。
We were stranded at Heathrow Airport for hours until the airline found some ash hole to fly through.
我们在奥斯陆机场等了好几个小时，知道飞机找到了几个灰洞才飞过去。
A closer look at Sarychev Peak Volcano reveals more detail, the circular hole in the clouds around the island, the smooth condensation cloud wrapping much of the ash plume.
仔细看看火山山顶发现Sarychev更详细的圆孔中的云彩在岛上，顺利凝结云包装大部分灰羽。
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