Ditrigon
双三角形
🗣️ 情景例句
Hey, let's go out and have some fun tonight.
嘿，咱们今晚出去玩儿吧。
Live to learn and learn to live.
生而学之，学而生之。
and he had seen there evidence enough to overthrow Aristotle and Ptolemy together.
观察到的论据足以把亚里士多德和托勒密一起推翻。