无效

Enhance the entering wind gap to avoid idling.

增大进风间隙，确保进排空气流量的平衡，有效避免换气无效空转。

Not only will this information help local healthworkers, by winnowing what works from what does not, it may also increase international trade in African herbal medicines.

这不仅能帮助当地的卫生工作者，还通过分类天然植物的有效成分和无效成分可能在无形中为非洲药用植物打开了国际市场。

Regarding their own casualties, the same source said that "the Chinese People's Volunteers suffered 148,000 deaths altogether (among which 114,000 died in combat, incidents, and winterkill, 21,000 died after being hospitalized and 13,000 died from diseases); 380,000 were wounded and 29,000 missing, including 21,400 POWs (of whom 14,000 were sent to Taiwan, 7,110 were repatriated)."

而对于己方参战人员的伤亡数据，中朝军队官方在上面的文件中声称战争中有14.8万名中国人民志愿军官兵死亡（包括战死，意外死亡和冻死的11.4万人，战争中受伤经医治无效死亡的21000人以及死于染病的13000人），38万人受伤，29000人失踪。这失踪的人也包括被联合国军俘虏的21400名官兵（这些战俘有14000人被送到台湾，另外7110人被遣返中国）。

I tried to persuade her,but without effect.

我试图劝他，但是无效。

E.g. I tried to persuade her, but without effect .

我试图劝她，但是无效。

This privilege and license will be come to an end without notice after the termination of this agreement.

本合同的任何条款或其被认定为无效的部分条款并不影响本合同其他部分的效力。

It is wrongheaded and ineffective. If it went, Cubans would know they had nobody except their rulers to blame for their plight.

除非这些判断都是错误的，或者这些举措都是无效的；否则一旦诺言兑现，古巴人民对自己的苦难的境遇就无从抱怨，只能责怪自己的统治者。

In Zimbabwe, voters say choice has nothing to do with today's run-off election.

在津巴布韦，人们说今天的大选是无效的。

The rate of absorption and export by the leaf related closely to the exposure time with an asymetotic curve. The equations are: Y=93.0-84.8(0.987)~x and Y=86.0-79.1(0.986)~x,respectively.Autoradiograph of seedlings treated on a single leaf(dose:107.3×10~3Bq)showed that not only PP333 was transported acropetally to the tip, but also moved basipetally to the roots.

过去的研究工作所得的普遍结论是：PP333是通过木质部运输，叶片吸收的PP333向其他部位运输的量极少，因而，叶片吸收在抑制生长中不起或不起重要作用，即叶片吸收无效阁。

It was more effective method that the treatmeat of chronic sinusitis with adenoidal hypertrophy in children. ESS and plasma ablation was a more effective method.

结果：对腺样体肥大伴慢性鼻窦炎经非手术治疗无效的儿童用ESS加腺样体手术疗效较单纯腺样体手术效果显著。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失