Will time travel ever become a reality?

　　時光旅行真的會成為現實嗎？

　　He could no longer distinguish between illusion and reality.

　　他再也分不清幻想與現實之間的區別了。

　　You need to keep a good grip on reality in this job.

　　做這個工作你需要充分了解實際情況。

　　He's really very human when you get to know him.

　　你若了解他，就知道他確實很有人情味。

　　In my experience, very few people really understand the problem.

　　據我的經驗看，真正理解這個問題的人很少。