Protonogram
质子衍射图
🗣️ 情景例句
Life has its ups and downs, but it certainly has its rewards.
人生有沉也有浮，但是无论怎样都确有其价值。
All of us hope that you will enjoy yourselves.
我们全体人员祝大家过得愉快。
We may travel by sea.
我们可能乘船去。