I think what this example shows is that the happy activity need not be recreational;
我想这个例子说明快乐活动不必是一项娱乐活动；
The investigation and analysis of urban public space of medium measure and its activity need hold rational attitude.
中观层面城市公共空间及其使用的调研与分析需要秉持科学理性的态度。
So, how to determine precursory clustering earthquake and how to fully utilize it to forecast earthquake and to monitor earthquake activity need to be deep studied and probed.
所以，如何判定前兆震群和充分利用前兆震群预报地震和监视未来地震活动有待更深入的研究和探讨。
The schools don't have the funds for video surveillance, so we need people in the neighbourhood to call their nearest police station and report any suspicious activity immediately.
这些学校没有资金安装视频监控，所以我们需要附近的人给最近的警察局打电话，并立即报告任何可疑的活动。
You might need an activity that does nothing at all, such as when you have a construction that requires an activity, but there is no work to be done.
您可能需要一个根本不执行任何工作的活动，例如，当您拥有一个需要某个活动的构造，但没有要执行的任何工作时。
The astronaut shouldering the historic task will need the help of another astronaut to put on a 120kg, non-powered spacesuit for the extra vehicular activity.
承担此项历史性任务的航天员要先在另一名航天员的帮助下穿上120公斤的无动力舱外活动航天服。
If you would like to start trampolining, you may first need to ask a doctor to make sure it's a safe activity for you.
如果你想开始玩蹦床，你可能首先需要请医生确保这对你是一项安全的活动。
Today, in Australia, most children on average fall 2,000 steps short of the physical activity they need to avoid being overweight.
今天，在澳大利亚：大多数孩子平均比避免超重所需的身体活动少了2000步。
Either you or the other person may need to continue an activity such as working or shopping.
你或对方可能需要继续某项活动，如工作或购物。
If parents want to be part of that free time, they need to see that playing on computers can be a fun family activity.
如果家长们想要融入这些空闲时间，他们需要明白，玩电脑可以成为一种有趣的家庭活动。
You might need an activity that does nothing at all, such as when you have a construct that requires an activity, but there is no work to be done.
您可能需要一个根本不执行任何工作的活动，例如，当您拥有一个需要某个活动的构造，但没有要执行的任何工作时。
You need one receive activity per operation you define in the process's interface.
您在流程接口中定义的每个操作都需要一个接收活动。
What constitutes physical activity may also need some rethinking.
什么是体育活动同样需要一些反思。
Actually, these activity descriptions provide nearly all the guidance you need for any program.
实际上，这些活动描述提供给你进行任何开发的几乎所有的指导。
Are there any dietary or activity restrictions that I need to follow?
我是否有什么食物上或活动上的禁忌？
You can use a wait activity when you need your process to stop running for some period of time.
当您需要让流程停止运行一段时间时，可以使用等待活动。
Children go through dynamic phases of growth, and a low-calorie diet is not what they need. They need nutrients and activity.
儿童成长是一个动态的过程，低热量饮食并不符合他们的所需，他们所需的是(足够的)营养和活动。
A reply activity doesn't necessarily need to be at the end of the process.
应答活动不必位于流程的结尾。
9New brain-imaging techniques allow researchers to take pictures of the living brain at work, to examine its structure and activity, without the need for surgery or other invasive procedures.
新的脑成像技术允许研究者对工作中的人脑成像，也允许检查脑结构和脑活动而不需要外科手术或其它开颅过程。
There’s plenty of debate on the topic, but one reasonable starting point is the Center for Disease Control’s “How much physical activity do you need?”
此问题尚无定论，但有个合乎情理的出发点：疾控中心的“你需要多少体育活动？”
Therefore, in order to reply to the message that arrived through the Receive activity, you would need a Reply activity with the same triplet.
因此，为了应答通过Receive活动到达的消息，您将需要一个带有相同的三元组的Reply 活动。
Before checking files in or out, your developers need to set an activity to the current view.
在检入或检出文件前，开发者需要设置一个活动到当前的视图。
When we check-in the test assets, we need to create an activity with which to associate them.
当我们检入测试资产时，我们需要创建一个与它们相关联的活动。
Know when to say no: If your child is already doing a lot but really wants to take on another activity, discuss what other activity or activities need to be dropped to make room for the new one.
要知道什么时间说“不”：如果你的孩子已经参加了大量的活动，但是仍然想要参加另一个，就要讨论一下还有什么别活动或者需要放弃目前活动以腾出空间来参加新活动。
If kids have a hard time keeping up academically, they may need to drop an activity.
如果孩子在学业上要度过一个困难时期，他们需要放弃一些活动。
As part of checking in the test assets, we will need to create an activity for the check in.
作为在测试资产中检入的一部分，我们需要为检入创建一个活动。
You need this information to update the activity with a bookmark.
需要利用这一信息用书签更新活动。
A BPEL4WS process only allows one activity per process, so if you need to conduct a collection of activities, you can use a structured activity to enclose the collection.
BPEL4WS流程只允许在一个流程中有一个活动。因此，如果您需要管理一组活动，您就可以用结构化活动来包含该组。
This activity is very useful if you need to provide a cancellation function in your process.
如果您必须在流程中提供取消功能，那么该活动将非常有用。
In addition, the types of actions or styles of activity models might need to be constrained to allow efficient transformation of those models to the target execution platform.
另外，活动模型样式或者操作的类型需要得到限制，以支持那些模型向目标执行平台的有效转换。
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