adv.
非言语所能表达地

[ adv ]
to an inexpressible degree
<adv.all>
she was looking very young tonight, and, as usual, indescribably beautiful, in a simple strapless dress of a green and white silky cotton

Unutterable \Un*ut"ter*a*ble\, a.
Not utterable; incapable of being spoken or voiced;
inexpressible; ineffable; unspeakable; as, unutterable
anguish.

Sighed and looked unutterable things. --Thomson.
※ -- {Un*ut"ter*a*ble*ness}, n. --
{Un*ut"ter*a*bly}, adv.