这种效果是持久的。
在演讲中添加幽默元素，能够增强与观众的亲和力，减少紧张气氛，令观众精力集中，增强演讲的效果和持久力，使演讲被观众记得更牢。
Including humor in a speech improves audience rapport, reduces tension, keeps the audience alert and focused, improves impact and retention, and makes the speech more memorable.
有氧运动能触发大脑中产生快乐的神经传递素的释放，而且这种效果的持久性要比以往任何人想象的都要长。
Aerobic exercise triggers the release of pleasure-inducing neurotransmitters in the brain, and its duration can be a lot longer than anyone previously thought.
目的：观察A群流脑多糖菌苗的免疫效果和免疫持久性。
Objective: To observe the effect and endurance of the polysaccharose vaccine for prevention of epidemic encephalitis caused by Type a virus.
教师培训中构建学习力，有助于提高教师学习的有效性和持久性，能够从新的视角改善培训效果。
Build learning power not only can promote learning effectiveness and durability, but also can improve teachers training bye a new perspective.
评价接种酵母重组乙肝疫苗（基因疫苗）的免疫效果与免疫持久性，为基因疫苗的推广应用及高危新生儿乙型肝炎的预防提供依据。
To assess the immunogenecity and efficacy of the yeast recombinant hepatitis B vaccine (YHB vaccine) for the prevention of hepatitis B in the newborns.
Marsiske 说，效果的持久性真的是前所未有的，这项试验比其他认知研究具有更多样化的样本。
The durability of the effects really is unprecedented. There was also a much more diverse sample than any other cognitive research had allowed.
Marsiske 说，效果的持久性真的是前所未有的，这项试验比其他认知研究具有更多样化的样本。
The durability of the effects really is unprecedented. There was also a much more diverse sample than any other cognitive research had allowed.
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