1N-COUNT （英联邦各国互相派驻的）高级专员 A High Commissioner is a senior representative who is sent by one Commonwealth country to live in another in order to work as an ambassador. （英联邦各国互相派驻的）高级专员
2N-COUNT （国际组织的）高级专员 A High Commissioner is the head of an international commission. （国际组织的）高级专员
...the United Nations High Commissioner for Refugees.