Definition:危機先驅(qū)種wēi jī xiān qū zhòng新生于大滅絕期間的高壓力災(zāi)變環(huán)境并延續(xù)至復(fù)蘇期和輻射期的物種,后來成為生物復(fù)蘇與輻射的源泉之一。crisis:a time of great danger,difficulty or uncertainty when problems must be solved orimportant decisions m......(本文共 414 字) [閱讀本文] >>