On the morning of the 26th (bottom), the slick appeared to disappear, but this was due to changes in lighting conditions, not the absence of oil.
在26日上午(下图)，浮油似乎消失了，但是这只是由于光照条件的变化导致的，而不是油污真的消失了。
One of the biggest changes during my absence was the advent of the Internet.
我不在的那段时期发生的巨大的变化之一就是出现了互联网。
Results in the patients with mild tooth agenesis, the limited changes in hard and soft tissue parameters were induced only by the number of tooth absence.
结果在轻度牙齿先天性缺失患者中，牙齿缺失数目引起硬、软组织参数的变化是有限的。
Methods Spectrophotometry was used to determine the changes of activity of HPAP during guanidine denaturation in the presence and absence of phosphate.
方法应用分光光度法测定有磷酸盐及无磷酸盐存在时，HPAP在胍变性过程中的活力变化。
Methods Spectrophotometry was used to determine the changes of activity of HPAP during guanidine denaturation in the presence and absence of phosphate.
方法应用分光光度法测定有磷酸盐及无磷酸盐存在时，HPAP在胍变性过程中的活力变化。
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