But, some of those things are, like, verifiably true, like, there's documented evidence, there's whistle blowers.

但是，其中一些事情是可以验证的，比如有书面证据，有举报人。

In fact, it wasn't until the late 19th century that we had our first documented evidence of nocturnal flight calls.

事实上，直到 19 世纪末，我们才首次获得夜间飞行呼叫的记录证据。