urban agriculture class的用法和樣例：
例句
- All these patterns of agriculture operate within the context of the global ecosystem.
所有這些農業(yè)類(lèi)型，都在全球生態(tài)系統的范圍內產(chǎn)生作用。 - The innovation of the plowing tools and the development of the cultivation tools indicate that Lower Xiajiadian Culture belongs to the type of intensive agriculture.
翻耕工具的革新，加之中耕工具的發(fā)達，表明夏家店下層文化已屬于一種精耕細作的農業(yè)類(lèi)型，與遼西區新石器時(shí)代諸考古學(xué)文化相比已發(fā)生了顯著(zhù)變化。
