1.
(of discussion, communication,etc)producing no useful results;unproductive
（指讨论、联系等）无结果的,无效果的
2.
an inefficient campaign against illegal drugs.
反对非法毒品的无效果的运动
3.
make ineffective by counterbalancing the effect of.
通过均衡……的效果使无效。
4.
Not capable of producing a desired effect or result; ineffective.
不灵的无法产生预期的效果或结果的；无效的
5.
The effect was nil.
效果为零，效果全无。
6.
If we have little of substance to say, a polished presentation means little.
如果言之无物,修饰的表达效果不大。
7.
Not productive of a good or useful result.
无结果的，无成效的不产生商品或有用结果的
8.
The state or quality of being incapable of producing a desired effect or result.
无效果无能力产生预期效果或结果的状态或性质
9.
Not bearing fruit or offspring; barren.
不结果实的；无效的不产生果实或后代的；不育的
10.
the act of nullifying; making null and void; counteracting the effect or force of something.
使无效的行为；使无效或不发挥作用；取消某些事物的效果和作用。
11.
inconclusive arguments, discussions, evidence, etc
无结果的辩论、 非决定性的讨论、 无效的证据.
12.
The plant growth regulator. 83008-1, has a favorable effect on the fruittingperformance of the fig tree, Ficus carica.
83008—1对无花果的结实具有明显的作用效果。
13.
'#' : invalid character : possibly the result of a macro expansion
“#”:无效字符:可能是宏展开的结果
14.
His unselfish work is beginning to tell.
他无私的工作开始产生效果。
15.
receiving of broadcast signals;efficiency of this
（无线电信号的）接收,接收效果
16.
a therapist who treats speech defects and disorders.
治疗语音效果和无序的临床医学家。
17.
It is debatable whether it is cost-deffective.
它的成本--效果如何，尚无定论。
18.
Objective To evaluate sanitary effects on attic type composting latrine.
目的评价阁楼式堆肥厕所无害化效果。