Aboriginality
n. 原始狀態, 本土性
??? 情景例句
I type about 40 words per minute.
一分鐘我能打40個字。
What I dream of doing is taking a year off and sailing around the world alone.
我夢想能夠休上一年假，自己乘船周游世界。
and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian role.
我們只要看一看蝙蝠回聲定位這一極不尋常的發現，就可以探究一下聲音在什么情況下有絕對的實用價值。