"Double the sweetness" 可以用 "double sweet" 或 "twice as sweet" 来表达。这个表达式是来源于英语中对于甜味的描述，用来形容某物比一般甜得多。以下是一些例句：
This cake is double sweet, it must have a lot of sugar in it.
I pke my coffee twice as sweet as most people do.
The strawberries were double sweet this year.
这种表达方式可以用在任何想要表达“双倍甜蜜”的场合中。