Transportation, 交通, Importantly, 重要的是, Pollution, 污染, Resources, 资源, Disappear, 消失, Creatures, 生物, Layer, 层, Zone, 区域, Sunlight, 阳光, Twilight, 暮光, Midnight, 午夜, Oil Spill, 石油泄漏, Garbage, 垃圾, Overfishing, 过度捕捞, Plastic, 塑料, Biodegradable, 可生物降解, Non-biodegradable, 不可生物降解, Made out of, 由…制成, Reproduce, 繁殖, An example of, 一个例子

Our World 4B Unit 6 Flash Cards

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