3g
abbr. 第3代移动通信技术（The 3rd Generation Telecommunication）
🗣️ 情景例句
Mrs. Greenberg is on the phone.
Greenberg太太打电话来。
One of my suitcases is small,and the other one is medium size.
我的一个提包是小的，另一个是中等的尺寸。
From the shore line, out to a distance which may be anywhere from a few miles to a few hundred miles,
从海岸线向大海延伸几英里到几百英里的区域是大陆架慢坡，