drastic[

televise [

crystallize

KK: [

burst into laughter——begin to laugh

burst into song——begin to sing

burst into tears——suddenly begin to cry

burst into angry speech——begin to speak angrily

burst into blossom——（trees，plants）open out wi

spark

noun 1 a very small burning piece of material that is produced by sth that is burning or by hitting two hard substances together

A shower of sparks flew up the chimney.

2 a small flash of light produced by an electric current

tangible adj

1 that can be clearly seen to exist

tangible benefits/improvements/results

We cannot accept his findings without tangible evidence.

tangible assets(a company