Powellites
(powellite 的復數) 鉬鎢鈣礦
??? 情景例句
I'd like to talk to you about something.
我想跟你談一件事。
What's your favorite kind of animal?
你最喜歡的動物是什么？
and he had seen there evidence enough to overthrow Aristotle and Ptolemy together.
觀察到的論據足以把亞里士多德和托勒密一起推翻。