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我们生产的每一块塑料都应该有明确的再利用或回收路径。
The strength of a response tendency depends on the amount of reinforcement received.
高利润并不必然需要艰苦的工作、低工资和恶劣的条件。
"We are all just passing through, leaving traces of ourselves behind like footprints in the sand."
We must decouple economic growth from environmental degradation.
人的命运在他的灵魂中。