Protohippus
n. [古生](原产北美现已灭种的)原马
🗣️ 情景例句
at my junior high school graduation.
在我初中毕业的时候。
You're likely to see a cheerful message or two hanging on the wall.
很有可能会看到一两条挂在墙上的格言。
The cave might never have been discovered has not the entrance been spotted by the distinguished French pot-holer, Berger.
若不是法国著名洞穴探险家伯杰由于偶然的机会发现了这个洞口的话，这个洞也许不会为人所知。