Their yawning seems to have nothing to do with sleepiness or boredom—quite the reverse—but it does precede a change in activity level.

他们打哈欠似乎与困倦或者无聊没有任何关系，但恰恰相反，打哈欠这一行为的确出现在了活动水平的变化之前。

The empirical evidence, such as it is, suggests an altogether different function for yawning—namely, that yawning prepares us for a change in activity level.

很多实验证据证实了打哈欠的另一个不同的功能，它能让我们做好准备，改变活动状态。

It has a budding community growing in activity.

它有一个正在成长的萌芽社区。

Find Alan's report card in activity 2b on page 29.

在第29页的2b中找出艾伦的报告单。

Actions in activity diagrams and attributes of actions.

活动图表中的活动以及活动的属性。

The team found differences in activity and anxiety levels.

这支队伍发现了不同程度的活性与焦虑。

"Represents" attribute of object node in activity diagram.

活动图表中对象节点的“Represents”属性。

Object nodes in activity diagrams along with "State" attributes.

活动图表中与“状态”属性一道的Object节点。

Control flows and initial flows between actions in activity diagrams.

活动图表中操作之间的操作流程以及初始流程。

Even small increases in activity improved the odds of staving off the disease.

即使是小量增加活动也能改善削减癌症的机会。

Such differences in activity and anatomy, though, must have deeper causes.

这种活性和解剖学上的差异肯定有更深层次的原因。

2b Listen again.Match the requests in activity 2a with the responses below.

再听一遍，把2a中的要求同下面的回答联系起来

By contrast, boys in the same situation show no such increase in activity in these areas.

相比之下，男孩在同样的情形时这些区域活动表现的没有这样活跃。

Retrenchment by companies is a more likely culprit for the more recent drop in activity.

公司规模的消减更有可能是最近经济衰退的罪魁祸首。

In activity form, you capture the decision conditions as post-conditions of the output criteria.

在活动形式中，决策条件将被捕获为输出条件的后置条件。

A modest increase in activity can lead to better overall health, fitness, and quality of life.

适度的增加运动会带来更好的全面的健康和长寿。

But you, dear reader, are indulging right now in activity that is equally as polluting as air travel: using a computer.

但是你，我敬爱的读者，正放纵于一项与空中旅行造成同等污染的活动：使用电脑。

Any bounce in activity from a turnaround in the stock cycle will be short-lived if underlying demand fails to revive.

如果基础需求没有重新增加，任何来源于股票周期突然上扬的反弹都会是短期的。

But there were a record 26 Predator drone attacks last month, a spike in activity that suggests something is going on.

但是有一份记录表明26名袭击者在上个月发动了袭击，这次袭击如一根利刺，好像暗示着有什么事情将要发生。

For inactive children and youth, a progressive increase in activity to eventually achieve the target shown above is recommended.

对缺乏身体活动的儿童和青少年，建议采取渐进的方式增加身体活动量，最终达到上述的推荐量。

The new study shows that they also have a greater imbalance in activity between the left and right brains when they process emotions.

新的研究表明，当他们进行情绪活动的时候，他们的左脑和右脑也在进行着更加不平衡的活动。

We expect the us to be much busier and, pending conditions in individual markets, there is likely to be a pick-up in activity across Europe.

我们期望美国更忙碌，在整个欧洲活动的个人市场活动中的未决条件将会减少。

After the three months, the men had changes in activity in about 500 genes — including 48 that were turned on and 453 genes that were turned off.

3个月后，这些男子大约500个基因的活性发生变化-其中48个基因被打开，453被关闭。

A process model that makes use of several input and output criteria in the activities, but does not use gateways is denoted as being in activity form.

如果流程模型在活动中使用多个输入和输出条件，但并不使用网关，则表明它采用的是活动形式。

This was one reason why there was a sharp dip in activity in the April-September period as the relief teams left well before the construction teams arrived.

这就是为什么今年4 - 9月期间在救援队撤出且施工队尚未到达的情况下重建活动骤降的原因之一。

In activity-oriented services, the operations are the center of attention, with a single operation for each activity the client might request to be performed.

在面向活动服务中，对客户端请求执行的每个活动的单一操作来说，操作是关注的中心。