In addition, evidence of long term effectiveness is lacking and cost-effectiveness is uncertain.
此外，缺乏长期效益与成本效益的证据。
We remain skeptical about the long term effectiveness of unilateral JPY intervention as previous efforts have had only a short-lived impact.
因为前几次努力都只是产生昙花一现的效果，所以我们仍怀疑单边干预日元的长期效果。
Neither piece of research is the last word, and neither discounts the long-term effectiveness of economic growth in improving working conditions.
这两篇研究报告都不是定论，而且都没有考虑经济增长对改善工作环境的长期效果。
Dr. Ludwig noted that the long-term effectiveness of fasting had not been well studied.
路德维希博士指出，禁食的长期有效性尚未经过充分的研究。
Dopamine improves low blood pressure (hypotension) in preterm babies more effectively than dobutamine in the short-term, but evidence on safety and long-term effectiveness is needed.
多巴胺比多巴酚丁胺在短期内改善早产儿血压低(低血压)更有效，但需要的是安全性和长期有效性的证据。
However, "we are just starting to learn about the long-term effectiveness of biologic therapies for psoriasis."
然而，“我们刚开始了解生物疗法的长期功效。”
However, "we are just starting to learn about the long-term effectiveness of biologic therapies for psoriasis."
然而，“我们刚开始了解生物疗法的长期功效。”
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