The explorer was ever awake for the dangers that surrounded him.这个探险家时刻提防着周围的危险.The explorer was killed by barbaric people.那位探险家被野蛮人杀死了.Some prevision warned the explorer of trouble.某种预感警告探险者将有麻烦发生....
This system is being tried out experimentally at many universities.该系统正在很多大学试用。In my opinion, the curvature was determined experimentally.依我看, 这种曲度是根据实验确定的.This machine was introduced experimentally in 1960.这台机器是在1960年被试...