VOA慢速英语:Climate Change, Dams Threaten Vietnam Rice Industry

tributary – n. a stream that flows into a larger stream or river or into a lake

viability – adj. capable of succeeding

adapt – v. to change your behavior so that it is easier to live in a particular place or situation

value – adj. the amount of money that something is worth; the price or cost of something

degrade – v. to make the quality of (something) worse

assertive – adj. confident in behavior or style

brake – n. something used to slow or stop movement or activity (usually + on)

pattern – n. the regular and repeated way in which something happens or is done