[CentOS] wget: unable to resolve host address “xxxxx”

Hi all,

I find that in my CentOS, which is installed in vmware, I can use yum to
install software from Internet, and I can also ping websites, but I
cannot download stuff using wget.
I receive error msg unable to resolve host address “xxxxx”. The IP
address is 192.168.80.128, and this is the content of /etc/resolv.conf
# Generated by NetworkManager
domain localdomain
search localdomain
nameserver 192.168.80.2

I'd appreciate your help.