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14#
發表於 2007-9-2 12:37 AM
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Originally posted by alienck at 2007-9-2 12:32 AM:4 i) J6 K: E9 J
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0 C* X. E% L: F可能係3m/s吧............ $ j& K8 D# r+ j6 @' ^" N" m
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另外
2 ~- B, V, t7 k+ D! _. R1 U.S. survey mile (also called "statute mile") = 1 mi = 5280 ft
2 G0 z' V3 L" J W& s1 international mile = 1 mi = 5280 ft
. Y; b% I5 \7 i8 F2 V, U1 ft = 0.3048 m
6 M, ^" E1 O0 Z2 `4 ^所以 1mi = 1.6km
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