其实，上面一段引文中的第二个minute并非时间单位。 它不是我们熟知的“分钟”，而是角度单位：分。
The quote mentioned how many minutes the ship saileth in an hour, and the reason for this is that in this case a minute isn’t a unit of time, but a measurement of angle.
它的角度间隙大小都是以微米为单位，就连加油都十分讲究，该多的多，该少的少，否则就会影响手表走时精准性。
It is the Angle of the size of the gap is in microns, even the gas is very particular about, the more and more, the little less, otherwise it will affect the precision of the watch travel time.
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