Rnaa
[化] 放化中子活化分析
🗣️ 情景例句
A little knowledge is dangerous.
一知半解最危险。
Best wishes to you both.
祝你们俩无比幸福！
The children were at school, my husband was at work and the house was quiet.
孩子们在上学，我丈夫在上班，家里清静得很。