Ephemerid
n. 蜉蝣
🗣️ 情景例句
Will you help me?
可以帮助我吗？
A middle course is the safest.
中庸之道最保险。
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。