Following into a hole of the base of some scrubby bushes, he started digging with a metal pole.
接着在一片杂木丛生的灌木丛中发现了一个洞，他开始用金属棒往里捅。
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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