Topocline
地理渐变群, 地区渐变群
🗣️ 情景例句
Hi, Tom, this is Mary.
嗨，汤姆，我是玛丽。
Most Indian food has a hot taste.
大部分的印度菜都很辣。
It was the last day of the year and a large crowd of people had gathered under the Town Hall clock.
那是一年的最后一天，一大群人聚集在市政厅的大钟下面。