There is nothing in the rules of grammar to suggest that ending a sentence with a preposition is wrong.

在语法规则中没有哪一条表明以介词结束一个句子是错误的。

《柯林斯英汉双解大词典》

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"I would like to see the mountains," I said, and then my dream began to form along with the sentence, "I might,I want to be a doctor."

VOA: special.2009.02.14

And for reference, incidentally, in case you ever forget what the point of some exercise was, I'll almost always comment the code up top with a quick sentence or two that reminds you what this program does.

顺便作为参考，为了避免我们可能忘记一些代码的意思，我通常会用一两个简单的句子,在上面作出注释,那样会提醒我们这个程序是干嘛的。

哈佛公开课 - 计算机科学课程节选

The Israelites will want to know who has sent me, Ehheh asher ehyeh And God replies with a sentence, "Ehyeh asher ehyeh."

以色列人还想知道是谁打发我来的，上帝用这句话作答“

耶鲁公开课 - 旧约导论课程节选

Mairead's husband, Mick Philpott, is serving a life sentence with a minimum term of 15 years.

BBC: Mick Philpott, Mairead Philpott and Paul Mosley

Megrahi was serving a life sentence with a minimum term of 27 years after being convicted in 2001.

BBC: Law chief 'deplores' bomber claim

Later, Professor Hawking completed the sentence with: "but they evaporate in 10 to the minus 23 of a second, " or some such.

BBC: How sci-fi moves with the times