VOA慢速英语:More of Us to Go Thirsty As Earth Dries Up

ratio – n. the relationship that exists between the size, number, or amount of two things

exacerbate – v. to make a situation or problem worse

aggregate – n. a total amount

flashpoint – n. a point, place or situation in which sudden anger or violence could happen

desalinate – v. to remove salt from something, such as water

hot spot – n. a very popular or active place

ventilate – v. to allow fresh air to enter and move through

hyperthermia – n. the condition of having a body temperature greatly above normal