🗣️ 情景例句
They have an opening.
他们有一个空房间。
Did you give it to him yourself?
你自己亲自交给他吗？
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。