香甜松软的 “cake（蛋糕）” 是令很多人垂涎的美食。因此，人们也常用单词 “cake” 来比喻各种 “美好的、令人想要得到的东西”。比如，“a slice of the cake” 的意思就是 “可以得到的一份利益，分一杯羹”。
用法总结
1. “a piece of cake” 小菜一碟，非常容易的事
- Fixing the bike was a piece of cake once I found the right tools.
- The maths exam was a piece of cake for Shu.
2. “have your cake and eat it too” 鱼和熊掌兼得，两全其美
- He wants to spend all his money on holidays and save for a house, but he can't have his cake and eat it too.
- You can't have your cake and eat it too – either save money or spend it on holidays.
3. “a slice of the cake” 可以得到的一份利益，分一杯羹
- The company made huge profits, so the workers are hoping for a slice of the cake.
- When the startup was sold, the money was shared out so every employee got a slice of the cake.
4. “the icing on the cake” 锦上添花或雪上加霜
- It was great to see an old friend, but the sunny weather was the icing on the cake.
- He lost his job, and his car breaking down was the icing on the cake.
（拓展学习：熟词僻义 | cake 是一种怎样的硬化和覆盖？）
