Various types of phosphatidylcholines house different kinds of fatty molecules linked to a common core.

不同种类磷脂酰胆碱的结构是不同种类的脂肪性分子结合到一个常规核上。

With the Common Core, this has been pushed and pushed and pushed that kids should be reading, sitting and listening, she said.

“共同核心标准影响下，我们不断不断地强调孩子要看书、坐好、听老师讲，”她说。