a. 不相称的

[ adj ]
out of proportion
<adj.all>

Disproportional \Dis`pro*por"tion*al\, a.
Not having due proportion to something else; not having
proportion or symmetry of parts; unsuitable in form, quantity
or value; inadequate; unequal; as, a disproportional limb
constitutes deformity in the body; the studies of youth
should not be disproportional to their understanding.