by mistake错误地
You referenced an invalid internal link by mistake because of a typo.
输入出错致使你错误的引用了一个无效的内部链接。
Think you wandered in here by mistake?
你觉得自己是不小心逛到这里来的?

make sure 确保
Finally, make sure you are living your life.
最后，确定正视自己的生活。
Make sure she eats nutritious food.
要确定她吃得很营养。