VOA慢速英语:US Navy Destroyer Crash: How Could it Happen?

collision – n. crash when two or more things hit each other

unfortunately – adj. used by a person to say something bad or unlucky happened

accompany – v. go somewhere with

vigilant – adj. watching carefully for signs of problems or danger

guideline – n. rule or instruction for how something should be done

significant – adj. important or noticeable

shed light on – expression. to help to explain something by providing additional information

monitor – v. watch or observe over a period of time

yield – v. allow another car, ship, etc. to go ahead before you