Deutoxide
重水
🗣️ 情景例句
But I suggest you complete your education first.
但是我建议你首先完成你的学业。
People are always changing, aren't they?
人总是在变，不是吗？
when H.M.S. Porcupine was put at the disposal of the Royal Society for several cruises,
皇家学会用英国"豪猪号舰艇进行了几次巡航后，