I can't believe Maysa is her sister.

我不敢相信梅萨是她妹妹。

Wow, I can't believe you didn't see the wall.

哇，我不敢相信你没看到城墙。

I can't believe how fast the time went by!

我不敢相信时间过得这么快！

I can't believe the first week is coming to an end.

我不敢相信第一周就要结束了。

I can't believe that today is the last day of junior high school.

我不敢相信今天是初中的最后一天。

I can't believe you believe that crap.

我真不敢相信你会相信那些废话。

I can't believe you can be such a git.

我真不敢相信你会这么饭桶。

I can't believe you did that, lel.

我不敢相信你做了那件事，笑。

I can't believe this is happening.

我不敢相信这个正在发生。

I can't believe it! he exclaimed.

“我简直不敢相信！”他呼喊道。