1·Espial: the act of watching or observing; observation.
窥探，侦察：观看或观察的动作；观察。
2·You will have a bit espial to see how the temperature change.
稍加观察就可以看出温度是怎样变化的。
3·When the waggon had passed on, gabriel withdrew from his point of espial.
当马车继续前进的时候，加布里埃尔也离开了他窥探的地点。