To be loyal to one's sovereign and devote oneself to the service of the nation.
老园丁默默耕耘数十年，悉心照料这片土地，他的精神正是对忠诚和奉献的最好诠释。
The old gardener toiled silently for decades, meticulously tending to this land; his spirit is the best interpretation of loyalty and dedication.
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