Orthopositronium

正阳电子素; 正电子对素

🗣️ 情景例句

I consider him a genius.
我认为他是天才。
Few words are best.
少说为妙。
At the base of the gold cap, the words 'made in the U.S.A' had been nearly inscribed.
笔帽下方整齐地刻有“美国制造”字样。
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