Agron
n. 土壤腐殖质残积层
🗣️ 情景例句
You sound excited about Columbia.
听起来你对Columbia大学跃跃欲试。
It's a beautiful country with several chains of mountains.
这个国家很美，它有很多山脉。
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。