We need to define the task ahead very clearly.
我们需要明确今后的任务。
It depends on how you define the term 'hostile'.
那得看你怎么定义hostile这个词。
The term 'mental illness' is difficult to define.
“精神病”这个词很难下定义。
这很难定义。
你如何定义爵士乐呢？
这很难定义。
They would define the driver's role in such cars.
他们将定义司机在这类汽车中的角色。
Of course, it's important to first define happiness.
当然，首先定义幸福是很重要的。
Now, the way we see and define our group is changing.
现在，我们看待和定义群体的方式正在改变。
Play is easier to define with examples than with concepts.
用例子比用概念更容易定义游戏。
Of course, a lot depends on how you define just what a war is.
当然，这在很大程度上取决于你如何定义战争。
Given curiosity's complexity, scientists have found it hard to define.
考虑到好奇的复杂性，科学家们发现很难定义它。
In ancient times, people define a happy life as a life with food and shelter.
在古代，人们把幸福的生活定义为有食物、有住所的生活。
They help us to define and understand our problems and find solutions to them.
他们帮助我们界定和理解我们的问题，并找到解决方案。
It might seem that certain traits would clearly define a species as a keystone species.
似乎某些特征会清楚地将一个物种定义为关键物种。
We all define fun differently, of course, but I can guarantee this: If you put just a bit of it into your day, your energy will increase quickly.
当然，我们对乐趣的定义各不相同，但我可以保证：如果你每天为自己增添一点点乐趣，你的活力也会迅速增加。
They may define their contribution too narrowly.
他们可能把他们的贡献说得太狭隘了。
It is difficult to define what makes him so popular.
很难解释清楚什么原因使他如此走红。
It's difficult to define the exact nature of the problem.
很难给这个问题确切定性。
It is difficult to define the border between love and friendship.
爱情和友情之间的界线难以划清。
Norms define how people "ought to" behave under particular circumstances in a particular society.
规范阐明了人们在特定社会中的特定情况下“应”如何行事。
Anusitis is a difficult condition to define and therefore confusing to study.
肛门炎是一种较难定义的疾病，因此研究起来较易混淆。
此词难下定义。
首先，定义一些变量。
Define three interaction sets.
定义三个交互集。
定义服务接口。
Define your working directory.
定义工作目录。
你如何定义自己的需求？
定义本地基础。
定义客户端网关。
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