英语听力精选进阶版 14393（在线收听）

Flies move 'like fighter jets'

Vocabulary

astonished

very surprised

pitch

(of a boat or aircraft) move up and down suddenly

stability

balance

abrupt

sudden and unexpected

manoeuvre

a movement that you need skill and care to do

subtle

not obvious, difficult to notice

discernible

able to be seen or noticed

process

understand and deal with

swat

hit with a flat object (especially an insect)