Equidensitometry
等密度测量
🗣️ 情景例句
Well Tom, I hope you have a good time in America. I'll miss you.
就这样了，汤姆。我希望你在美国玩得很愉快。我会想你的。
To youth I have but words of counsel -- work, work, work.
对青年人，我要奉劝几句话∶工作，工作，再工作。
The two boys are in the river now.
两个男孩现在在河里。