不安定的,易发生变化的
Labile \La"bile\, a. [L. labilis apt to slip, fr. labi to slip.] Liable to slip, err, fall, or apostatize. [Obs.] --Cheyne.
labile adj 1: open to change; liable to change; "an emotionally labile person" 2: (chemistry, physics, biology) readily undergoing change or breakdown