1·My wife, Elaine, appears at the top of the stairs, an inscrutable expression on her face.
我的妻子伊莱恩站在楼梯最上边，脸上表情莫测。
2·The demon aimed two pairs of eye-stalks in his general direction, studied him with an inscrutable expression in its hideous face and took two long strides towards him.
魔鬼两双触角似的眼睛看着他大概的方向，以一个变幻莫测的表情研究了他一下并且朝他走了两步。
3·Even when we're trying to be inscrutable, our true feelings involuntarily flash across our faces for about a fifth of a second: a micro-expression.
即便当我们努力要不带表情，我们真实的感受会不由自主地从我们脸上一闪而过，大约是五分之一秒的时间：微表情。