UNICEF: 50 Million Children Displaced Worldwide(翻译)

gang – n. a group of young people who do illegal things together and who often fight against other gangs

smuggling – v. to move someone or something from one country into another illegally and secretly

xenophobia – n. fear or hatred of strangers or foreigners

migrants - n. people who move from one place to another, often for economic reasons

mentioned - v. noted

annual - adj. yearly; taking place once a year

committed - v. to decide to use or do something for a reason

host - v. to lead or chair an event