ad. 不结果实的, 徒劳的, 无益的, 无效的, 无结果的

[ adv ]
in an unproductive manner
<adv.all>

Fruitless \Fruit"less\, a.
1. Lacking, or not bearing, fruit; barren; destitute of
offspring; as, a fruitless tree or shrub; a fruitless
marriage. --Shak.

2. Productive of no advantage or good effect; vain; idle;
useless; unprofitable; as, a fruitless attempt; a
fruitless controversy.

They in mutual accusation spent
The fruitless hours. --Milton.

Syn: Useless; barren; unprofitable; abortive; ineffectual;
vain; idle; profitless. See {Useless}. --
{Fruit"less*ly}, adv. -- {Fruit"lness*ness}, n.