Geochronologic
a. 地质年代的
🗣️ 情景例句
That's right. Grandpa hangs it there for good luck.
是的。爷爷把它放在那儿 以求好运。
United's Flight 102 leaves at 9:20.
联合公司的102次班机9点20分起飞。
It was not yet light, so it was easy to stay hidden.
天还没亮，所以很容易隐蔽。