It can tell the position on which your fingers are pressing, but it can only do force sensing for one position — one finger — at a time.
它可以辨别用户手指挤压的位置，但是一次只能感知一只手指在一个位置的挤压力度。
2
Technically, back labor occurs when the fetus is in a posterior position, with its face up and the back of its head pressing against your sacrum, or the back of your pelvis.
从技术上来说，背阵痛发生在胎儿处于背对的位置，它的脸朝上而后脑勺紧靠你的骶骨或者骨盆后方。
3
This persistence of real identity puts Facebook in a position to solve one of the most pressing problems on the Internet today-the proliferation of user names and passwords.