Microdensitometry
微密度测定
🗣️ 情景例句
Ring? Ring?
戒指？ 戒指？
Prove thy friends ere thou have need.
需要朋友之前，先要加以考验。
After working hard during the day I like to relax in the evening.
白天干了一天，晚上我要放松一下。