中文關鍵字
全球危機生態污染保存性質概念人種植樹罷工人的權利有毒的污染災害動畫片向量移動電話屏幕保護程序應用背景保護求廠不等式麻煩生態平等需要選舉哭了乞討園藝乞丐政治培養難民遭受工人作物勞動者幫幫我世界收穫生物回收
英文關鍵字
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