We have got the firsthand data together.

我们已经收集了第一手材料。

youdao

Unfortunately, many computer users have experienced firsthand the effects of malicious mobile code, including viruses and worms, which can damage or destroy data and cost time and money.

遗憾的是，许多计算机用户都亲身体验过恶意移动代码(包括病毒和蠕虫)造成的后果，这些代码可能会损坏或毁坏数据，并会浪费时间和资金。

youdao

Only that future generations will have an unprecedented amount of firsthand data (in 140-character bites) about what people from every corner of the world were doing, thinking and feeling at every moment starting four years ago.

CNN: Who said tweets are trivial?