I have learned the most important language by meeting a wide range of people from different cultures.
我接触到许多来自不同文化的人,掌握了最重要的语言。
they can locate and steer clear of obstacles -- or locate flying insects on which they feed.
并能通过回声来确定并躲开障碍物,或找到它们赖以为生的昆虫。