effective since翻译

effective since的基本解释

读音: 美: 英:

自……起生效：表示某个规定、政策、协议等自某个时间点开始生效。

例句

And even for those who can afford them they are not that effective since, by the time a farmer spots an infestation, it is too late to spray.就算对那些有钱购买的人来说，化学杀虫剂也不是很有效，因为当种植户发现害虫将大规模出现的时候就已经太晚了。
The US is pursuing advantages in the virtual space partly because its "Asia Pacific Rebalancing" strategy hasn't been very effective since it was launched.美国追求在虚拟空间里取得优势，部分原因在于“亚太再平衡”战略自实施以来效果甚微。
This year alone sees significant steps forward in the protection of employees' rights, with the new Labour Contract Law (effective since January this year).今年，中国颁布新《劳动合同法》今年1月开始施行，在保护员工权利上迈出了重要的一步。
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