witnessed

This university has witnessed quite a few changes over the years.

这所大学多年来经历过很多变革。

This year's charity ball was the most successful one ever, as witnessed by the number of tickets sold.

今年的慈善舞会是最为成功的一次，这可以从售出门票的数量上看出来。

Her will was witnessed by two colleagues.

她的遗嘱由两名同事签名作证。