VOA慢速英语:Better Language Learning with Mobile Apps

mobile - adj. able to be moved; movable

address - n. a place where someone or something can be reached

quiz - n. a short test

infographic - n. a sign or image representing information or knowledge

scan - v. to use a machine or device to read or copy something into a computer

error - n. something that is not correct; a wrong action or statement

flashcard - n. a learning tool with words, numbers or pictures

engage - v. to give serious attention to something

boil down to (something) - expression. to be reduced to its main points