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how to understand these sentences [Copy link] 中文

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Post time 2006-2-4 11:25:21 |Display all floors
1. the total quantity of water is not known, but it is about enough to cover the surface of the globe to a depth of about two and three--quarter kms.
   how to understand "two and three-quarter"?

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Post time 2006-2-4 11:47:33 |Display all floors
Originally posted by xiaoju at 2006-2-3 22:25
1. the total quantity of water is not known, but it is about enough to cover the surface of the globe to a depth of about two and three--quarter kms.
   how to understand "two and three-quart ...


two and three-quarter kms = 2.75 kms

a quarter = 1/4 = 0.25

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Post time 2006-2-4 14:37:47 |Display all floors

thanks

thank you for your explanation

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Post time 2006-2-8 16:58:14 |Display all floors
perfect explanation!

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Post time 2006-2-13 16:49:15 |Display all floors

=an half or three fourth km

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