Pion
[化] π介子
🗣️ 情景例句
A watch! I've got just the place for watches! Let's go.
手表！我正好知道有家卖表的。走吧！
He who handles a nettle tenderly is soonest stung.
与恶人交往而讲仁义，必受其害。
Have you decided which boat to take, Sir?
先生，您决定用哪只船了吗？