精讲巧练
Extinction
【原句回放】As the coastal water were heavily fished, the seals remained only on the southern-most eventually hunted to extinction. (P2)
【点 拨】extinction n. the situation when an animal or plant no longer exists表示“灭绝；熄灭”，
如：We should protect the species that are in danger of extinction.
The race was threatened with extinction.
