1. I want to expand my horizons.
我想拓展我的視野。

2. I've made a tough decision, sir. Here is my resignation.
長官，我做了一個很困難的決定。這是我的辭呈。

3. I quit because I don't want to be stuck in a rut. I want to move on.
我不想陷入窠臼所以才辭職。我希望能往前邁進。

4. First of all, I'd like to say that I've really enjoyed working with you.However, I think it's about time for me to leave.
首先，我要說的是，我真的很高興能與你共事。但是，我覺得該是我離開的時候了。

5. I've been trying, but I don't think I'm up to this job.
我一直很努力，但我覺得無法勝任這個工作。

6. I've been here for too long. I want to change my environment.
我在這里待太久了。我想轉換一下環境。

7. I'm sorry to bring up my resignation at this moment, but I've decided to study abroad.
我很抱歉在這個時候提出辭呈，但我已經決定要出國念書了。

8. To be honest, I've got a better offer.
老實說，我有一個更好的工作機會。

9. I'm running out of my steam. I need to take a big break.
我精疲力竭了。我需要好好休息。

10. I'm quitting because I want to try something different.
我辭職是因為我想嘗試些不一樣的東西。