有效

David: I've heard about vitamin C, but I think the zinc suggestion is an old wives' tale .

大卫： 我听说过维他命 C 有效，但我认为服用锌的建议是无稽之谈。

CT guided percutaneous drill resection is an effective method for the treatment of osteoid osteoma of the extremities.

结论CT引导下经皮磨除肢体骨样骨瘤是一种安全、有效、费用较低且精确度较高的微创手术，适用于所有肢体长骨的骨样骨瘤。

The new Human Papilloma Virus vaccine appears to be very safe and effective.

新式人类乳头状病毒疫苗非常的安全，有效。

In a perfect game engine, collision detection should be precise, efficient, and very fast.

在一个完美的比赛发动机，碰撞察觉应该是精确，有效，并且很快的。

Simulation results show that MCWM can improve the safety and performability of the path,thus the feasibility and validity of the modeling is confirmed.

仿真结果表明，MCWM方法合理、有效，可提高所规划路径的安全性和可执行性。

In order to find a quick valid scientific way to identify meat freshness, the article has analyzed that the measuring mechanism of discerning to fresh degree of meat, and structures one set of Intelligence measures, the system of distinguishing which is based on electronic information technology, Photoelectric detection technique, Treatment technology of the picture and Neural network mode recognition technology.

为找出一种快速、有效、科学的检测肉类新鲜度的方法，分析了肉类新鲜度检测辨识机理，构建了一套基于电子信息技术、光电检测技术、图像处理技术以及神经网络模式识别技术的智能检测辨识系统。

What if it's 100% effective for 3% of the population, due to their genetics, while it's completely ineffective for the rest.

如果一个药由于基因的原因对3%的人100%有效，而对其他人毫无效果，怎么办？

However, the researches from 1980s until now discover that some stocks or portfolios have certain predictable model, through which investors can earn premium returns, and that the stock market is not as efficient as what Efficient Market Hypothesis states.

但是，从80年代后期至今的大量金融研究发现，某些股票和资产组合的收益存在着某种可以预测的模式，投资者能够依据已有的信息来获得超额回报，证券市场并不像有效市场假说所描述的那样"有效"。

Differentiate the number of cluster tentatively. Then choose principal components through scatter plot matrix .

通过测试，该算法对不合理数据有较好的约束作用而且对类数的判别比较客观、有效。

Procaine can be effective and safety used in treating obvious hemoptysis, but we should pay attention to rare side effects ofprocaine.

普鲁卡因在大部分大咯血患者中应用安全、有效，但也应注意其少见的不良反应。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。