英语听力精选进阶版 13189（在线收听）

Vocabulary

the find

the discovery

awakened

prompted

flight data recorders

machines in planes which store information on what happened during each flight (e.g. plane's direction, weather conditions)

to determine the cause

to find out what made (the crash) happen

malfunctioning

faulty

contributed

added to the situation

costly

very expensive

to scour

to search thoroughly (along)

placed under investigation

questioned as part of the inquiry

involuntary manslaughter

causing people to die, but not deliberately