Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
region – n. a part of a country or of the world that is different or separate from other parts in some way
exacerbate(s) – v. to make a bad situation or problem worse
adoption – n. the act or process of taking an animal legally as your own
hay – n. grass that has been cut and dried to be used as food for animals
distinguishable – adj. able to be noticed or recognized as different from other things
