No research is known to have investigated the possible synergistic action of this combination.

没有研究是众所周知的调查可能的协同作用相结合。

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Further research is warranted to tease out whether mood or medication use is the primary driver of this phenomenon or whether there may be a synergistic effect at play.

进一步的研究是有必要，以此来理清情绪或药物的使用是否是这种现象的的驱动力，以及是否有可能是一个协同效应在起作用。

youdao

However, research on the synergistic action of the two factors is rare.

目前对于两者协同作用规律所作的研究甚少。

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This new type of synergistic interplay recently happened with engineers who designed robots inspired by research that Full had conducted on gecko feet.

CNN: Snails inspire design for state-of-the-art robots