While sleep patterns change as we age, the amount of sleep we need generally does not.
虽然睡眠模式随着年龄改变，但是我们需要睡眠的时间一般不会随着年龄改变。
That does not change the total amount of cloud (which is controlled by the amount of water vapour in the atmosphere). But having more, smaller droplets does increase a cloud's reflectivity.
盐颗粒增加了，小水滴的水量也就增加了，这并不能改变云的总量(其总量受大气层中水蒸气数量多少的影响)，但是更多更小的水滴的确能增强云层的反射度。
The mass of the object, the amount of matter it is made of, does not change.
物体是由物质组成的，物体的质量就是物质的总量，并不会改变。
Besides, they decrease rapidly with the increase of tube bundle rows. When the row number amount to 8 or more, the resistance coefficient does not change any more.
随管束排数的增加，阻力系数迅速下降，当管束排数大于8后，则不再有明显变化。
Besides, they decrease rapidly with the increase of tube bundle rows. When the row number amount to 8 or more, the resistance coefficient does not change any more.
随管束排数的增加，阻力系数迅速下降，当管束排数大于8后，则不再有明显变化。
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