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他们发现呼吸中枢的刺激来自于侧脑桥网状结构和侧位的下行神经通路。

They found the stimulation of the respiratory center by the lateral pontile reticular formulation and laterally located descending neural pathway.

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So, we need to fill our octet for selenium, so 1, 2, 3, 4.So, this is our Lewis structure here, hopefully you can see why it's not linear.

我们要填满硒原子的八配位，所以1，2，3，4。这就是Lewis结构，希望你们能看出来为什么它不是直线型的。

麻省理工公开课 - 化学原理课程节选