Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
alien – adj. from somewhere other than the planet Earth
county – n. an area of a state or country that is larger than a city and has its own government to deal with local matters
campsite(s) – n. a place where people can put up a movable shelter that is used outdoors, is made of cloth (such as canvas or nylon), and is held up with poles and ropes
souvenir – n. something that is kept as a reminder of a place you have visited or an event you have been to
post – n. a message on an online message board
conspiracy theories – n. theories that explain an event or situation as the result of a secret plan by usually powerful people or groups
sheriff – n. an elected official who is in charge of enforcing the law in a county or town of the U.S.
highway – n. a main road that connects cities and towns
personnel – n. the people who work for a particular company or organization
ugly – adj. very bad or unpleasant
