a house or hotel in the country or in the mountains where people stay on holiday, especially when they want to hunt or fish. (乡野中的度假) 屋舍; 旅馆
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If you proceed to do something, you do it, often after doing something else first. (做完某事之后) 接着 (做另一事)
If you grab something, you take it or pick it up suddenly and roughly. 抓住
平面一般力系向作用面内任一点简化的结果,是一个力和一个________