Photoneutrino

光生中微子

??? 情景例句

OK. Is that all?
好的。就這樣完了嗎?
The world is a ladder for some to go up and some down.
人間猶如一架梯,有人緣梯上升,有人順梯下降。
About once a month. Not too often, because neither of us has much time. We both have too much work to do.
大約每月一次。不太經常寫信,因為我倆的時間都很緊。我們都有做不完的事。
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