I'm not sure if it's true but I saw it on a TV show.

我不确定这是否是真的，但我在电视节目上看到的。

I'm not sure if it's true but I heard it on the radio.

我不确定这是否是真的，但我在收音机上听到的。

But it's true that we may never use some of these things again.

但确实我们可能再也不会用到这些东西了。

I can hardly believe it's true.

我几乎不能相信这是真的。

But scientists haven't made sure if it's true.

但科学家们还没有确定这是否是真的。

It's true that each ethnic group is well known for songs and dances.

诚然，每个民族都以歌舞而闻名。

In an online forum post, which asked if it's true that Louis Vuitton burned its bags.

在一个在线论坛帖子中，有人问路易威登是否真的烧毁了它的包包。

It's true that all the Harry Potter books together have sold about 450 million copies.

诚然，所有的《哈利·波特》丛书总共售出了大约4.5亿册。

It's true that I bought a mobile phone.

我买手机是真的。

I think it's true, but then, I'm no expert.

我认为这是真的，但我不是专家。