Acronyms are words formed from the first letter of several words (such as UN for United Nations).

首字母缩写是由每个单词的第一个字母组合而成的，比如un就是指united Nations。

youdao

UN troops are braced for more violence.

联合国部队准备应付更多的暴行。

《牛津词典》

He lauded the work of the UN High Commissioner for Refugees.

他赞扬了联合国难民事务高级专员的工作。

《柯林斯英汉双解大词典》

Mark Bowden, the UN humanitarian coordinator for Somalia, made the announcement Wednesday in Nairobi, Kenya.

VOA: special.2011.07.23

The UN High Commissioner for Human Rights,Navi Pillay, who disagreed with this decision, is once again calling for an investigation.

VOA: standard.2009.10.25

Tehran has not,as yet, agreed to the terms of a UN-draft deal to trade for highly enriched uranium from France and Russia.

VOA: standard.2009.12.18

Finally there is the administration's pledge to support Israel at the UN for a year.

CENTERFORSECURITYPOLICY: Facing our fears

In a letter made public late on Tuesday, Mr Salehi asked the UN for help in freeing the hostages.

BBC: Syria crisis: Iran pledges support for 'vital partner'

Many Gazans have returned to find their homes and schools destroyed and are turning to the UN for help.

BBC: Agencies rush aid to Gaza Strip