sweetener
n
1 [C, U] (piece of a) substance used to sweeten food or drink, esp as a substitute for sugar 使食物或饮料变甜的物质; (尤指)糖的代用品.
2 [C] (infml 口) attempt to persuade sb; bribe (对某人的)劝诱; 贿赂
The firm offered her a generous bonus as a sweetener. 公司提出给她一笔可观的花红藉以拉拢她.