正是在那段时间里，水冲刷得很厉害，以至于形成了大峡谷和地球上其他的巨大峡谷。
It was during this time, when the waters were running off rapidly, that the Grand canyon and other huge canyons of the earth were formed.
正是在那段时间里，水冲刷得很厉害，以至于形成了大峡谷和地球上其他的巨大峡谷。
It was during this time, when the waters were running off rapidly, that the Grand canyon and other huge canyons of the earth were formed.
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