过去的研究是由同一个研究小组发现的，研究显示母鸡也会选择性避免促使它持续警觉性站立和减少梳理羽毛的环境。
Previous research carried out by the same group has shown that hens also selectively avoid surroundings associated with high levels of standing and low levels of preening.
这项研究表明，迷走神经刺激可能是一个可行的选择，在患者治疗难治性快速循环双相情感障碍，该小组总结。
This study suggests that VNS may be a viable option in patients with treatment-resistant rapid-cycling bipolar disorder, the team concludes.
研究小组选择在猎户座的一个恒星形成区观测，他们认为氧气在一个温暖的不稳定的条件下将从尘埃和水冰中挥发出来。
The team chose a star-forming region in the constellation Orion, believing that oxygen would be "baked off" from the ice and dust in a warmer, more turbulent part of space.
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