12.I must fly<英,口>我得赶紧走了
I must fly or I'll miss my plane.我得赶紧走了, 要不就赶不上飞机了。
13.to let fly
(physically)猛烈攻击
She swung round, letting fly with a massive punch which grazed Patrick's shoulder.她突然转身, 狠狠地给了帕特里克一拳, 打伤了他的肩头。
(verbally)怒骂；痛斥
A simmering row ended with her letting fly with a stream of obscenities.激烈的争吵最后以她一连串的污言秽语宣告结束。