yī jué bù zhèn
one stumble, unable to rise (idiom); a setback leading to total collapse
ruined at a stroke
unable to recover after a minor hitch
jué
to stumble
to trample
to kick (of horse)
liào juě zi
(of mules, horses etc) to kick backward
to kick with the hind legs
fig. to flare up in anger
to display defiance