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Word for word:
krsi — plowing; go — of cows; raksya — protection; vanijyam — trade; vaisya — of a vaisya; karma — duty; svabhava-jam — born of his own nature; paricarya — service; atmakam — consisting of; karma — duty; sudrasya — of the sudra; api — also; svabhava-jam — born of his own nature.
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Farming, cow protection and business are the natural work for the vaisyas, and for the sudras there are labor and service to others.