Those problems on breaking in condition, choosing, winding preventing and knife avoiding of bag living garbage crusher are key technique needing solution urgently.
我国城市袋装垃圾处理尚处在研发阶段，垃圾破碎设备的条件性破袋破碎、分选、防缠绕、刀具避让等问题是急需解决的关键技术。
What would you build if you only had the following items at your disposal: a deck of CARDS, an elevator, a sharp knife, a mile of string, a mirror, whatever you have in your pockets or bag right now.
一副牌，一个升降机，一把锋利的刀子，一英里的绳子，一面镜子，还有你现在口袋里或者包里的东西，无论它是什么。
"There's formula in the bag," Caleb told her, and then proceeded to fix a bottle of it, studying the lines on the bottle, levelling the powder with a knife on the scoop.
“包里有奶粉。”卡莱布告诉她，接着就着手拿出装奶粉的瓶子，研究上面的说明，舀出奶粉，用小刀推成一平勺。
"There's formula in the bag," Caleb told her, and then proceeded to fix a bottle of it, studying the lines on the bottle, levelling the powder with a knife on the scoop.
“包里有奶粉。”卡莱布告诉她，接着就着手拿出装奶粉的瓶子，研究上面的说明，舀出奶粉，用小刀推成一平勺。
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