Large group of people in protest march outdoors young people carry signs sunset visible in background social activist movement 向量例证 large group of people in protest march outdoors young people carry signs sunset visible in background social activist movement
年轻男子拿着一个带有回收标志的袋子，里面装满了塑料瓶和垃圾，扔到街上的垃圾桶里，停止污染的概念，生态学 库存例证 年轻男子拿着一个带有回收标志的袋子，里面装满了塑料瓶和垃圾，扔到街上的垃圾桶里，停止污染的概念，生态学
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