甜头的英文：
sugarplum
sweetener

参考例句：

Remedy which was bitter to the taste,when inwardly receive was sweet.
良苦苦在甜头，甜在心头。

He tucked a five-dollar bill into her G-string and hoped for the best
他把一张5美元的钞票卡到她的兜裆布上，希望从她那里得到甜头。

If the hijackers are allowed to taste blood,who can say where their fury will end?
如果让劫机者尝到甜头，谁能说准他们的暴行会到什么地步才结束？

We hope your friends in movies do the same. You've done them a lot of favors, now you can call them in."
我们还希望你电影界的那些朋友也部分别签一个这样的合同，你给他们吃了很多甜头，如今可以请他们来赏光赏光嘛。”

sugarplum是什么意思：
n. 小糖果,甜言蜜语,甜头
sweetener是什么意思：
n. 甜味剂

To sweeten with or as if with honey.
加蜜或象加蜜般使变甜。

&10 will act as a sweetener on the official.
10 英镑将用作对官员的贿赂。

will act as a sweetener on the official.10
英镑将用作对官员的贿赂。

"Business sweetens pleasure, and labour sweetens rest"
工作后消遣更愉快,劳动后休息更舒畅

The small courtesies sweeten life; the greater ennoble it
有点礼貌使生活愉快,多点礼貌使生活高尚