标

biāo mark; sign; label; to mark with a symbol, label, lettering etc; to bear (a brand name, registration number etc); prize; award; bid; target; quota; (old) the topmost branches of a tree; visible symptom; classifier for military units

域

yù field; region; area; domain (taxonomy)

知

zhī to know; to be aware

产

chǎn to give birth; to reproduce; to produce; product; resource; estate; property

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