Geochronologic
a. 地质年代的
🗣️ 情景例句
He is a man of heart.
他是一个热血男儿。
To know the disease is half the cure.
找出病根等于治愈了一半。
There is so much variety that you never have to make do with second best.
物品种繁多，从来不必用二等品来凑合。