快三和值怎么预测简介：Isaline made some gestures, explained what a camera was, and told him the general optical principles. Sewell lowered his eyes and thought for a while, then said: This shouldn't be difficult.
Isaline made some gestures, explained what a camera was, and told him the general optical principles. Sewell lowered his eyes and thought for a while, then said: This shouldn't be difficult.
