Dog: Letters are coming through the hole in the door!

狗：信从门洞里塞进来了！

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Some people go dog sledding in Jackson Hole. They get on a sled and are pulled by a team of dogs through the snow.

有些人到杰克逊山洞去坐狗拉雪橇滑雪，狗拉雪橇滑雪就是游客坐在雪橇上，一群狗拉着雪橇在雪地上跑，这是众多享受传统山区景色方式的一种。

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The impact of an asteroid at the moon's South Pole 4 billion years ago threw out a colossal surge of debris - like a dog furiously digging a hole in the sand.

这40亿年前发生在月球南极的小行星撞击抛出了一大片碎渣——就像一只狗疯狂地在沙地里刨洞一般。

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Some people go dog sledding in Jackson Hole.

VOA: special.2009.02.16

In 1940, four teenagers, following their dog when it disappeared down a hole near Lascaux, France, discovered 17, 000-year-old drawings now known as the Lascaux Cave Paintings.

CNN: Friday,

One morning in September 1940, a boy called Marcel Ravidat was exploring the hills above Montignac when his dog, Robot, uncovered a hole beneath a tree root leading to a cave.

BBC: The perfect trip: Dordogne