例句與造句

1. Because of the sea level drop since the Eemian, exposed fossil coral reefs are common in the tropics, especially in the Caribbean and along the Red Sea coastlines.
2. The IOD phenomenon was first identified by climate researchers in 1999 . Yet evidence from fossil coral reefs demonstrates that the IOD has functioned since at least the middle of the Holocene period, 6500 years ago.
3. It's difficult to find fossil coral reef in a sentence. 用fossil coral reef造句挺難的