Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
migrant – n. a person who goes from one place to another especially to find work
dozen – n. a group of twelve people or things
vulnerable – adj. easily hurt or harmed physically, mentally, or emotionally
tent – n. a portable shelter that is used outdoors, is made of cloth (such as canvas or nylon), and is held up with poles and ropes
accredited – v. to say that something is good enough to be given official approval
