更多foram例句

1. Alvarez realized something dramatic had happened in the ocean that had driven many foram species extinct in a short period of time.
2. One thousand kilometers from Gubbio, at Caravaca on the southeast coast of Spain, Dutch geologist Jan Smit had noticed a similar pattern of changes in forams in rocks.
3. Foram′inated, Foram′inous, pierced with small holes: porous.