Topocline
地理渐变群, 地区渐变群
🗣️ 情景例句
And thanks again for the lunch and for the game.
再次谢谢你们提供了午餐和游戏。
I can see the brown wall of dust coming toward us with the wind.
风卷起褐色的墙壁似的滚滚黄沙，向这里袭来。
Speculations about is nature have been going on for literally thousands of years,
人们对睡眠作用的种种猜测，确实有数千年之久。