"eat your cake and have it too" in Chinese (Simplified)
Definition
想要两样无法同时得到的事，通常是不愿做出任何牺牲还想获得所有好处。
Usage Notes (Chinese (Simplified))
多用于指出某人贪心或不现实，想只要好处不付出代价。属于非正式表达，类似'鱼与熊掌不可兼得'。
Examples
You can't eat your cake and have it too.
你不能**既要马儿跑，又要马儿不吃草**。
If you want to travel, you can't eat your cake and have it too—you may need to spend money.
如果你想旅行，不能**既要马儿跑，又要马儿不吃草**，你可能得花钱。
She wants to work less and still get paid the same. You can’t eat your cake and have it too.
她想工作少还拿同样的工资。不能**既要马儿跑，又要马儿不吃草**。
Look, you can't eat your cake and have it too. Sometimes you have to choose what's more important.
你得明白，不能**既要马儿跑，又要马儿不吃草**。有时候总得做选择。
People always want shortcuts, but you can't just eat your cake and have it too in life.
人们总想走捷径，但生活中没法**既要马儿跑，又要马儿不吃草**。
He was upset he missed the party, but you can't eat your cake and have it too when you choose to work instead.
他为错过聚会难过，但选择工作的时候，不能**既要马儿跑，又要马儿不吃草**。