定约用英语怎么说？

定约

例句

• Only perfect defense could set four spades. 只有出色的防守才能打宕四黑桃的定约。
• Overtrick - each trick won by declarer's side in excess of the contract. 超墩——定约方庄家所赢得的超过定约数的每一墩.
• The declarer may easily lose his way on this contract before he has adjusted his sights. 在这定约中,庄家在纠正他的看法以前,很容易迷失方向.