The systolic part refers to the pressure when your heart is expanded, and the diastolic reading is when your heart is at rest.
收缩部分是指当你的心脏扩展时的压力，舒张的数据读取是当你的心脏放松时产生的压力。
Reading Einstein's biography expanded my mind as I began to understand the Theory of Relativity.
读爱因斯坦传拓展了我的思维，使我逐渐理解了相对论。
That content is delivered in a "news feed" type interface that looks a little like Facebook or Twitter, but where message headlines can be expanded with a click for reading and viewing multimedia.
该内容以类似于Facebook和Twitter的news feed形式提供，但消息标题可通过点击来阅读完整内容并浏览多媒体。
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