But in Hungary, they are trying to see if there's any evidence to back up the claims made by dog owners.而在匈牙利我们尝试研究能够支持那些狗主人言论的证据

back up:支持；援助

Do you have any facts to back up all this?

你有可以证明这一切的任何事实吗?

To test this idea, Adam and his team acted out a number of scenarios, provoking dogs to bark in different ways.为了证实该观点亚当和他的团队设想了许多方法刺激狗用不同的声音吠叫

act out:将…付诸行动

All his life he tried to act out his beliefs.

他一生致力于把自己的信仰变成行动。

They are determined to act out their ideal.

她们决心把自己的理想变成行动。

a number of:许多；若干（后接可数名词的复数形式）

The company made a number of rules and regulations.

公司制定了若干条规章制度。

A number of questions came up at the meeting.

会议上提出了许多问题。