如果没有困难，可以用英语表达为"It's a piece of cake"或"It's easy as pie"。这两个短语都用来表示事情很简单，容易做到。
"It's a piece of cake"这个短语可能源于英语中cake（蛋糕）这个单词本身就带有"美味、轻松、惬意"的意思。所以"It's a piece of cake"这个短语就表示事情很简单，就像吃蛋糕一样轻松愉快。
"It's easy as pie"这个短语的由来可能源于英语中的"easy as falpng off a log"（就像从木头上掉下来一样简单）这个短语。后来"pie"（馅饼）这个单词取代了"log"（木头）这个单词，所以就有了"It's easy as pie"这个短语。
以下是一些英文例句及其中文翻译：
"It's a piece of cake. You just need to follow the instructions."（这很简单，只需要按照说明操作就行了。）
"It's easy as pie. You don't even need to use a calculator."（这太简单了，甚至都不用用计算器。）
"This math problem is a piece of cake for me. I can solve it in no time."（这道数学题对我来说太简单了，我可以很快解决。）
"I thought this project would be difficult, but it was easy as pie. I finished it in just a few hours."（我原本以为这个项目很难，但实际上它很简单，我只用了几个小时就完成了。
"It's a piece of cake"这个短语可能源于英语中cake（蛋糕）这个单词本身就带有"美味、轻松、惬意"的意思。所以"It's a piece of cake"这个短语就表示事情很简单，就像吃蛋糕一样轻松愉快。
"It's easy as pie"这个短语的由来可能源于英语中的"easy as falpng off a log"（就像从木头上掉下来一样简单）这个短语。后来"pie"（馅饼）这个单词取代了"log"（木头）这个单词，所以就有了"It's easy as pie"这个短语。
以下是一些英文例句及其中文翻译：
"It's a piece of cake. You just need to follow the instructions."（这很简单，只需要按照说明操作就行了。）
"It's easy as pie. You don't even need to use a calculator."（这太简单了，甚至都不用用计算器。）
"This math problem is a piece of cake for me. I can solve it in no time."（这道数学题对我来说太简单了，我可以很快解决。）
"I thought this project would be difficult, but it was easy as pie. I finished it in just a few hours."（我原本以为这个项目很难，但实际上它很简单，我只用了几个小时就完成了。