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The most sustainable product is the one that lasts the longest.
羊羔有跪下接受母乳的感恩举动,小乌鸦有衔食喂母鸦的情义。
你对生活了解得越多,你就能为你的表演带来更多。
The pursuit of knowledge is a journey without a final destination.
The method of introspection must be rigorously standardized.