Mammifer
n. <古> = mammal
??? 情景例句
Pubs and discos are good place to kill time.
酒吧和舞廳是消磨時間的好地方。
What is the way to the airport?
哪一個方向是去飛機場？
they can locate and steer clear of obstacles -- or locate flying insects on which they feed.
并能通過回聲來確定并躲開障礙物，或找到它們賴以為生的昆蟲。