Nearly 50 million children in the world are refugees, migrants or without a home, the United Nations Children's agency reported.
UNICEF said 28 million children have fled violence or conflict, according to a written report. The agency called the situation "a growing crisis."
Last year, almost half of all children registered as refugees came from two countries: Syria and Afghanistan.
But UNICEF said this crisis affects children from all parts of the world. The UNICEF report mentioned that Central America, Asia and Africa also have refugees who are children.
The report notes that when and if children reach their final stops, the threats they face often do not disappear. Those threats include sex trafficking, criminal gangs and smuggling. Children continue to need help and protection.
World leaders gather in New York for the annual U.N. General Assembly later this month. There will be two separate meetings on migration and refugees.
U.N. Secretary-General Ban Ki-moon will host the first meeting. U.S. President Barack Obama will host the second meeting.
UNICEF said it hopes the summits will be committed to children.
The UNICEF report called for addressing the root causes of migration and refugees. The agency said conflict, violence and extreme poverty are the root causes.
The report also urges measures to stop xenophobia and discrimination against refugees. And, it introduced measures to prevent the abuse of children on the move.
I'm Anna Matteo.
1.criminal gang 犯罪集团，犯罪团伙
When I see Chinese people I worry if they belong to the criminal gang.
2.UNICEF (United Nations International Children's Emergency Fund) 联合国儿童基金会
After that, she worked for 10 months in Latin America as an intern for UNICEF.
He says the growing number of refugees and migrants is leading to more intolerance and xenophobia.
She is exempt from sex discrimination laws.
1.Those threats include sex trafficking, criminal gangs and smuggling.
sex trafficking 性交易，人口贩卖
In my last column, I described the sex trafficking in places like Cambodia as a modern form of slavery, and I believe that.
But it says the United States remains a source, transit and destination county for men, women and children subjected to forced labor, debt bondage and sex trafficking.
但报告说，美国仍然是男人、女人和儿童的人口贩卖来源、运送和目的国 。 这些人被迫劳动、欠债和从事性交易 。
2.UNICEF said it hopes the summits will be committed to children.
be committed to... 致力于，以……为己任
China will continue to be committed to the reconstruction course of Iraq.
Other social people who have undergraduate or above experience and want to commit oneself to international legal affairs later.
联合国儿童基金会（UNICEF）称，根据一则报告显示，有2800万儿童因暴力或冲突事件远离家乡 。该机构将这种情况成为“愈发严重的危机” 。
但联合国儿童基金会表示，这一危机影响了全球各地的儿童 。这则报道提到，中美洲、亚洲、非洲也有难民儿童 。
该报告还称，即便这些孩子到达了目的地，他们所面临的威胁依然不会消失 。这些威胁包括性交易、犯罪集团、走私等 。这些孩子依然需要帮助和保护 。
多国领导人齐聚纽约参加将于本月下旬举行的年度联合国大会 。其中有两次分会议题为迁移儿童与难民儿童 。
联合国秘书长潘基文将主持第一次会议 。美国总统奥巴马将主持第二次会议 。
这则联合国儿童基金会的报告呼吁解决迁移儿童与难民儿童的根本问题 。并表示，冲突、暴力和极度贫困是根本原因 。
该报告敦促各方采取措施，阻止对难民的仇外和歧视情结 。此外，还介绍了一些阻止虐待儿童的措施 。