VOA慢速英语:Russia Says Flyover of US Ship Was Safe

flyover – n. when an airplane or group of airplanes passes low over someone or something

warship – n. a military ship that has many weapons and is used for fighting in wars

simulated – adj. made to look, feel or behave like something

proximity – n. the state of being near

uNPRofessional – adj. not having or showing the experience or skill that is expected or appropriate in a person who is trained to do a job well