although the fossil record is incomplete, it still gives us a broad brush outline of what happened . 盡管化石記錄不很完全,但仍然給我們一幅關(guān)于到底發(fā)生了什么事情的大體輪廓。
the fossil record indicates these people had conquered disease 化石記錄顯示他們征服了疾病
a fossil record 化石的記錄
the first animals in the fossil record appeared between 620 and 550 million years ago in the vendian period 第一動物在化石紀(jì)錄出現(xiàn)在620和550百萬之間年前在vendian期間。
for example, the fossil record shows elephants that found their way onto islands millions of years ago shrank rapidly 例如,化石記錄顯示,數(shù)百萬年前開始到島嶼上生存的象群數(shù)量減少非常迅速。