adv.
无效地, 无益地

[ adv ]
in an ineffectual manner
<adv.all>
she tried ineffectually to light the primus, and Thomas came to help her

Ineffectually \In`ef*fec"tu*al*ly\, adv.
Without effect; in vain.

Hereford . . . had been besieged for about two months
ineffectually by the Scots. --Ludlow.