久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

北極...

The South Pole and the North Pole areantipodes.南極和北極是對跖地域.There have been at least thirteen previous attempts to reach the North Pole unaided.之前至少已經(jīng)有過13次想獨(dú)立到達(dá)北極的嘗試。The arctic tundra is at the top of the world around the ...

the North Pole的音標(biāo)：...