Youtube中充满海量优质内容已经不是秘密(从激动人心的演讲到音乐视频到一只蜜獾)。

It's no secret that YouTube is filled with tons of great content (from inspiring speeches to music videos to honey badgers).

youdao

但他们自己心中也充满了疑问：欧洲强大和成功的秘密是什么？并试图去破解这些疑问。

But they were also overflowing with questions that aimed to unlock the secret of Europe's great power and success.

youdao

她美丽容颜的秘密？“努力工作！努力投入到每件事情中……这让你充满能量。我对每件事都充满好奇，因此从不觉得累。”

The secret to her good looks? "Hard work! Work hard for everything... that gives you energy. I don't feel tired because I'm curious about everything.

youdao