Sence
abbr. 社会－经济－自然复合生态系统模型（Social-Economic-Natural Complex Ecosystem）
🗣️ 情景例句
Are all the classes within walking distance?
所有的教室都在步行范围之内吗？
To stand on your hands
倒立
Eventually chains were fixed to one end of the dish and a powerful winch was put into operation.
不过，他们终于将链条固定在盘子的一端，一台大功率的绞车开动起来。