It is too expensive for farmers to use routinely, and since it is not effective until a month after vaccination, administering it after an outbreak begins helps very little.
对于农民来说，按常规来使用它则过于昂贵，而且由于它在接种疫苗后一个月才有效，所以在疫情爆发后才使用几乎没有什么帮助。
While they sound efficient and cost-saving, a recent study reports that they are not effective, primarily because depressed patients are not likely to engage with them or stick with them.
虽然它们听起来很高效而且节约成本，但最近的一项研究表明，它们并不有效，主要是因为抑郁症患者与之接触的可能性低，也难以坚持下去。
Publically, the tobacco industry maintains that tax increases are not effective.
公开地，烟草行业坚持认为增税是无效的。
There are so many data values, however, and he thought a manual input was not effective.
然而，这里有很多数据值，如果他使用手动导入会效率很低。
the transfer of rural surplus labor force is not effective in promoting agricultural growth.
农村剩余劳动力的转移并未有效促进农业增长。
Officials at the Food and Drug Administration said the drug was not effective enough to merit such risks.
食品药品管理局的官员说，此药的药效不足以来冒这种风险。
My other piece of advice is that authorizations are not effective unless authentication has been performed.
我的另一个建议是，授权在执行之前不具效力。
Treatment: Antibiotics are not effective, so rest, especially for the first weeks of illness, and take plenty of fluids.
疗法：抗生素不起作用的，所以，你要做的是休息，尤其是刚刚发病的几个星期之内，还有就是多喝水。
A: People in need are usually happy to receive assistance, but in some cases it is not effective and quite inappropriate.
答：有需求的人往往为受到援助而感到高兴，但在某些情况下援助效率不高，而且很不恰当。
When hormonal therapy is not effective we now have chemotherapy regimens that have a good chance of controlling the disease.
当激素疗法不太见效的时候，还可以尝试化疗，也能很有效地控制疾病。
He cites in evidence a drug trial by Amgen, a biotech giant, where the researchers concluded that the drug was not effective.
Grove博士举出了这样的一个例子：那是一个由生物技术界的巨头——安进公司所进行的一项药品实验。在这项实验里，研究人员总结道，该药品并不有效。
The sanctions are not effective. There will be no alternative but to attack Iran in order to stop the Iranian nuclear programme.
既然制裁无效，那就别无选择，只好攻打伊朗迫使其停止伊朗核计划。
In general, pointing out people's mistakes or criticizing their choices isn't polite, and it isn't welcome - and it's not effective!
总的来说，指出别人的错误或批评别人的选择是不礼貌的，也不受欢迎。那根本没有用！
This is not to say that you can't define more granular protections using roles; you can, but frequently it is not effective to do so.
这并不是说无法使用角色定义更细粒度的保护，但这样做的效果通常不好。
The key point to remember is that the classpath specified in the EJB JAR file or the Web module is not effective until the deployment phase.
要记住的关键一点是EJBJAR文件或Web模块中指定的类路径在部署阶段之前是无效的。
Unless we identify anti-patterns, patterns and best practices of semantic interoperability, our decisions are not effective to solve problems.
除非我们确定了语义互操作性的反模式、模式和最佳实践，否则我们的决策就不能够有效地解决问题。
We also provide menthol balm, cold water and places for them to sleep, but some drivers have complained the balm is not effective enough for them.
“我们还提供薄荷糖、冷水和供睡眠的地方，但一些司机们抱怨说，薄荷糖对他们作用不大”。
Hepatology Digest: Several preclinical studies showed that experimental anti-fibrotic drugs are not effective in animal models with liver fibrosis.
《国际肝病》：几种临床前期的试验研究表明，进行试验的抗肝纤维化药物对于肝纤维化动物模型并不是很有效。
Virginia is effective for conducting ASW against some submarines, but is not effective in some environments or against most quiet threats of record.
弗吉尼亚级的反潜战能力对某些潜艇有效，但是在某些环境中，或是针对那些最安静的目标，效果不佳。
Conclusion vertical control was good in jaw bone and was not effective in dentition when applying maxillary protraction combined with rapid expansion.
结论联合上颌前方牵引及快速扩大方法对颌骨垂直向控制较好，但对牙齿垂直向控制较差。
Thus, the entry into the vibration of love, sometimes called by your people the vibration of understanding, is not effective with the present societal complex.
因此，进入爱的振动的入口，有时你们称为理解的振动，这在你们目前的社会复合体中还不是切实有效的。
This reveals the fact that the teaching of spoken English in most senior middle schools in China is not effective enough to meet the communicative needs of the students.
这也从侧面反映了一个事实：在我国大多数高中英语口语教学还不够有效，不足以满足学生的交际需求。
Its economists have argued both that capital controls are costly because they induce distortions to resource allocation and that they are not effective because they are easily evaded.
该组织中的许多经济学家一直认为资本控制代价高昂(因为这样做会导致资源分配扭曲)并且毫无效果可言(又因为可以轻易地避开资本控制)。
The second algorithm is proposed because the method of difference image is not effective when the different information coming from two frames of difference image is too much or too little.
算法二是针对两帧差分图像之间所提供的差异信息过多或过少这两种极端情况，用差影法粗分割对人脸图像进行预处理时失效而提出来的。
The second algorithm is proposed because the method of difference image is not effective when the different information coming from two frames of difference image is too much or too little.
算法二是针对两帧差分图像之间所提供的差异信息过多或过少这两种极端情况，用差影法粗分割对人脸图像进行预处理时失效而提出来的。
应用推荐