Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
context – n. the situation in which something happens
transfer – v. definition
retrieve – v. get or bring (something) back; regain possession of
work – n. something (such as a book, song, or painting) that is produced by a writer, musician, artist, etc.
database – n. a collection of pieces of information that is organized and used on a compute
