http://www.bbc.co.uk/news/science-environment-33305083
Vocabulary
1.disintegrate = to lose cohesion or unity:
2.tumble=to cause to fall or collapse; bring down
3.freighters = a ship or aircraft designed for transporting cargo
4.segment = one of several parts or sections into which an object is divided; portion
5.counterintuitive=counter to what intuition would lead one to expect.
6.fleet = A number of warships operating together under one command.
7.enormous = very great in size, extent, or amount.
8.grounded =prevent (an aircraft or a pilot) from flying.
Expressions
1.tumbled out
2.upper – stage
3.top segment
