尼泊尔对外国登山者重新开放

trek – v. to make a journey by walking

sector – n. one part of a country's economy

manage – v. to deal with something successfully

quarantine – n. a period of time during which a person or animal that has a disease or that might have a disease is kept away from others to prevent the disease from spreading

revive – v. make something from the past exist again

trail – n. a path through the countryside, often where people walk

adventure – n. an exciting and sometimes dangerous experience