契约: agreement, contract...
池塘: pool, pond...
新潮: modern, fashionable...
货: goods, money, commodity...
黑板: blackboard...
拼: to piece together, to join together, to stake all, adventurous, at the risk of one's life, to spell...
阴: Yin, overcast; cloudy, shade, hidden,concealed, covert...
污染: pollution, contamination...
熊: bear, (coll.) to scold, to rebuke, (coll.) weak, incapable...
自行: voluntary, autonomous, by oneself, self-...
