Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
transitional – adj. of or involving change
phase – n. a step in a process; a short period of time
thoroughly – adj. completely; exactly
implement – v. to carry out
adopt – v. to take up; to officially accept and put into effect
impact – n. a major or powerful effect
zone – n. area
ballistic – adj. relating to or involving the science of moving objects in flight
crucial – adj. important
sanction - n. a measure designed to punish a country for failure to obey international laws or rules
