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健康的动物是健康食品链的基础。
A healthy animal is the foundation of a healthy food chain.
Youth is not a time of life; it is a state of mind; it is not a matter of rosy cheeks, red lips and supple knees; it is a matter of the will, a quality of the imagination, a vigor of the emotions; it is the freshness of the deep springs of life.
The key to success is to find patterns where others see randomness.