这些白色的亮斑在主显示屏的中心处生成，开始扩散、变得越来越大。
Those spots of white emerged from the center of the main monitor and began spreading out and getting larger.
但是，生长在夏威夷主岛的人口聚集地附近的珊瑚礁却面临着径流沉积物、过度捕捞以及扩散性水藻等重重压力。
But those near the main Hawaiian island population centers are under pressure from sediment found in runoff, overfishing and invasive algae.
矿井主扇扩散器是用来降低出口动压以提高风机静压而回收风机出口动能的装置。
The diffuser of mines main ventilator is a device to reduce kinetic pressure at outlet, raise static pressure of ventilator and recover kinetic energy at outlet.
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