VOA慢速英语:普京宣称俄罗斯新型武器“天下无敌”

strategic –n. related to a long-term strategy or plan

cruise missile –n. a guided missile that flies long distances closer to the earth

drone –n. a vehicle that does not have people on it but is controlled remotely

uNPRedictably –adv. behaving in an unexpected way

intercontinental ballistic missile (ICBM) –n. a powerful rocket that travels into space to reach a distant target on earth

hypersonic –adj. many times faster than the speed of sound (which is about 1200 kilometers and hour)

lethal –adj. having the ability to kill, deadly

bluster –n. words that are loud and aggressive