Palaeodonta
古齒亞目
??? 情景例句
Are there any tours for the Grand Canyon?
有到大峽谷的旅游團(tuán)嗎？
That's a selfish point of view.
那是個(gè)自私的觀點(diǎn)。
We are so familiar with the fact that man ages,
我們對(duì)人總是要衰老的現(xiàn)象并不陌生，