Think twice before using money on expensive skin care products. The best ways to keep your skin in good condition is sufficient sleep.
至于那些昂贵的护肤品，最好考虑好了再决定是否要买。
Yet that is a necessary but not sufficient condition for its success.
然而，对于它的成功来说，这是一个必要条件，但不是充分条件。
The IMF suggests that a sufficient (although not necessary) condition for a global recession is any year in which world GDP per head declines.
IMF认为世界年度人均GDP下降是全球经济衰退的一个充分条件（而不是必要条件）。
Good presenters know that the content (data, evidence, logic) is a necessary condition but not a sufficient condition for a truly world class presentation job.
优秀的讲演者知道，内容(数据、证据、逻辑)只是真正的世界级讲演的必要条件，而非充分条件。
Being able to trace who said what is a necessary condition for building a system of trust, but this is not generally sufficient by itself.
能够跟踪谁说了什么是构建可信系统的必要条件，但只有这一条件，通常还不够。
In other words, basic science is a necessary but not sufficient condition for remaining industrially competitive.
换句话说，保持工业强大的竞争力，基础科学是必须的，但并不是全部。
So it's a sufficient condition for an argument being valid that there is no possible situation where the premises are true and the conclusion false. And that's a necessary condition too.
所以这对于论点有效性是充分条件，没有可能前提为真，结论为假，这是必要条件。
Our modern lifestyle is thus a necessary, but not a sufficient, condition for the high prevalence of obesity in our population.
我们的现代不良生活方式是个必然因素导致肥胖，但并不是致使我们整体人口数量中肥胖人口快速蔓延的全部原因。
Similarly, if we hear that self-expression_r is a sufficient condition of art, that prompts us to ask whether or not that criterion really picks out only artworks.
与此相似，如果我们听说自我表现是艺术的一个充分条件，那就立刻促使我们问：这个标准是否真的能够单把艺术甄别出来。
But, it seems equally clear that this necessary condition (call it the neutrality condition) is not sufficient.
但是，同样显然的是，这个必要条件也是不充分的。
Is being 20 years old a necessary or sufficient condition for being a college student?
就成为大学生而言，年满20岁是必要条件还是充分条件？
Is having the flu virus in your blood a necessary or sufficient condition for being sick?
对生病而言，你血液里有流感病毒是必要条件还是充分条件？
That is a necessary but not a sufficient condition, as the type of rock involved, called carbonaceous chondrite, is found in other asteroids, too.
他有两方面的证据：第一，现存的灾难性撞击的残骸与Baptistina和她的后代有相同的成分，这是必要条件，但并非充分条件，因为含碳的球粒状陨石在其它小行星上也有；
Mainly, it proves that a sufficient condition of a parahomogeneous function is a subhomogeneous function.
主要是证明了仿齐次函数为亚齐次函数的一个充分条件。
Is sunlight a necessary or sufficient condition for the roses to bloom?
阳光是玫瑰开花的必要条件还是充分条件？
Is attending class regularly and punctually a necessary or sufficient condition for being successful in class?
按时按点上课，对学好这门课而言，是必要条件还是充分条件？
The sufficient condition to the exponential stability of the networked control system is derived from the conclusion of the ADSs.
利用异步动态系统的相关结论，给出网络控制系统指数稳定的充分条件。
Diabetes is a metabolic condition in which the body does not form sufficient quantities of insulin or in which the insulin that is formed does not have sufficient effect.
糖尿病是机体代谢状态中不能形成充足的胰岛素或胰岛素不能产生足够的作用。
A sufficient condition is obtained using finite dimension linear matrix inequalities (LMI) describing by linear (parameter-variety) control.
最后通过线性参变控制，获得了用有限维数线性矩阵不等式描述的充分条件。
A sufficient condition of the extinction of the solution is given.
给出这种解在有限时间内熄灭的一个充分条件。
However, the Working Group argues the data centres location is neither a sufficient nor a necessary condition to mitigate infrastructure risks.
但是，工作组怀疑设立数据中心对减轻基建风险既不是有效也不必要的条件。
Using multiple Lyapunov functions, a sufficient condition is derived to ensure that the switched nonlinear systems are uniformly bounded and uniformly ultimate bounded.
基于李雅普·诺夫函数方法，给出了无激励非线性切换系统一致有界和一致最终有界的充分条件。
The sufficient and necessary condition of possession justice is the both justice of acquirement and transfer.
持有正义的充要条件是获取与转让同时是正义的。
Necessary and sufficient condition for existence of the controller is established, and complete parametric representations of the controller are presented.
建立了该控制方案存在的充要条件，并给出了该控制方案的完全参数表示。
The definition of adjoint pair and equivalent condition are discussed. A sufficient condition of adjoint pair is improved.
讨论伴随对定义及其等价条件，改进伴随对存在的一个充分条件。
The technological variable is the imperative condition for the growth while the institutional variable is the sufficient condition for this growth.
技术变量是经济增长的必要条件，制度变量是经济增长的充分条件。
The neutral delay nonlinear hyperbolic differential equation is considered. A sufficient condition for the oscillation on the equations is obtained.
考虑一类中立型时滞双曲微分方程，得到了该方程振动的一个充分条件。
Also a sufficient condition is obtained that product of two covariant topology Spaces is covariant topology space.
同时也给出了两个协变拓扑空间可乘的一个充分条件。
Also a sufficient condition is obtained that product of two covariant topology Spaces is covariant topology space.
同时也给出了两个协变拓扑空间可乘的一个充分条件。
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