fluke-flunk-accident

I will flunk him if my student doesn't learn the material in the course.
如果我的学生没有掌握课程的内容，我就会让他不及格。
That's just a fluke.
That doesn't mean anything.
那只是碰巧，这不代表什么
They are determined to show that their last win was no fluke.
他们决心证明他们上一次的胜利绝非侥幸。
I read about the accident in the local paper.
我在当地的报纸上看到了这次事故。

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