♻️ 回收利用：垃圾是放错的资源♻️ Recycling: Trash Is Misplaced Treasure

上一片算清了碳脚印，这一片低头看看脚边：快递箱、旧衣服、剩菜堆成山。小蓝说：它们不是垃圾，是放错了地方的资源。 Last leaf we counted carbon feet; now look down at your feet: delivery boxes, old clothes, leftovers piled high. Little Blue says: not trash — treasure in the wrong place.

第 1 步：垃圾分四类Step 1: Four bins for trash

先认桶：四种颜色，四种脾气。Meet the bins first: four colors, four tempers.

四色垃圾桶：可回收、厨余、有害、其他 — 蓝桶吃可回收（纸箱塑料瓶），绿桶吃厨余（剩菜鱼骨），红桶关有害（电池过期药），灰桶收其他（脏纸巾）。分对一步，后面全顺。 Blue takes recyclables (boxes, bottles), green takes kitchen scraps (leftovers, bones), red locks up harmful stuff (batteries, old pills), gray takes the rest (dirty tissues). Sort right once, and everything flows.

分好类后，垃圾去哪旅行？进流水线。Sorted — but where does the trash travel next? Into the line.

第 2 步：回收流水线Step 2: The recycling line

回收三站：分拣、破碎、再造 — 先分拣：纸、塑料、金属、玻璃各归各。再破碎：压扁机把瓶子压成小碎片。最后再造：碎片变成新纸卷和塑料粒。 First sort: paper, plastic, metal and glass each to its own box. Then crush: the press flattens bottles into flakes. Then remake: flakes return as new paper rolls and pellets.

再造的东西长啥样？它们会回到我们手里。What do remade things look like? They come back to us.

第 3 步：再生品与减量优先Step 3: Reborn goods — and less beats more

再生品：再生纸与旧衣变新衣 — 再生纸做成本子，几个塑料瓶变成一件新衣。但记住顺序：减量第一，回收第二。自带杯、布袋和竹杯，从源头让垃圾变少。 Recycled paper becomes notebooks, a few bottles become a new shirt. But order matters: less first, recycle second. Own cups, cloth bags and bamboo cups stop trash at the start.

🎮 你来当分拣员（30 秒）🎮 Your turn: sorting clerk (30 seconds)

道理讲完了。8 件垃圾、4 大关：点进（或拖进）正确的桶，分错了小蓝会讲原因。Theory done. 8 pieces, 4 rounds: tap (or drag) each into the right bin — Little Blue explains every miss.

一句话记住它：垃圾是放错的资源；分四类、走流水线、变再生品，减量永远第一。 Remember it in one line: trash is misplaced treasure; four bins, one line, reborn goods — and less always comes first.

四类：可回收、厨余、有害、其他，对号入座Four bins: recyclable, kitchen, harmful, other — each to its seat 流程：分拣 → 破碎 → 再造，各归各Line: sort → crush → remake, each to its own 优先：减量第一回收第二，自带杯和布袋First: less beats recycle — own cup and cloth bag

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内容参考 OpenStax 等公开教材，多来源核对 · AI 生成、人工审核 · 发现错误欢迎指正，帮这片叶子长得更好。 Based on OpenStax and other open textbooks, cross-checked across sources · AI-generated, human-reviewed · Spotted a mistake? Tell us — help this leaf grow.