incentive
/ɪnˈsentɪv/noun
1- a thing that motivates or encourages one to do something刺激, 鼓励; 动机, 诱因：
give farmers an incentive to improve their land.
给农民改良土地的刺激。
1.1
- a payment or concession to stimulate greater output or investment（鼓励增加产量或投资的）让利：
tax incentives for investing in depressed areas
投资萧条领域的让税措施
as modifier incentive payments.激励性报酬。
词源
late Middle English: from Latin incentivum 'something that sets the tune or incites'， from incantare 'to chant or charm'.