Conclusion Focusing on the management of "four new elements" can prevent nursing errors and mistakes.
结论重视“四新要素”的管理，可防范护理差错事故的发生。
The four new elements, all of which are synthetic, were discovered by slamming lighter -nuclei into each other and tracking the following decay of the radioactive superheavy elements.
这四种新元素都是人造的，是由火花与原子核相互撞击并且循着放射性超重元素衰变的轨迹而发现的。
But the H1N1 2009 is an entirely new combination of four genetic elements: a bird flu, some human flu genes and two types of swine flu.
但2009年的H1N 1流感结合了四种基因成分，因而是全新的。这四种基因成分分别是：禽流感，一些人流感基因，以及两种猪流感。
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