But after Maya closed the final page, I steered the conversation to the deeper issues in the book: mean girls and peer pressure and not going along with the group.
但在玛雅读完最后一页，我把对话引向书里更深层次的问题：坏女孩和朋辈压力以及不随大流。
2
They are opened and sustained in the open position by the force of velocity pressure, and closed by the force of gravity.
他是利用流体速度压力来开启和保持在开启的位置，并利用重力的作用来关闭。
3
Powder metallurgy (Fig. 5.1) USES sintering process for making various parts out of metal powder. The metal powder is compacted by placing in a closed metal cavity (the die) under pressure.