现在是户外活动的时间了。
教师们该如何证明花费大量时间来进行户外活动是合理的呢？
How can teachers justify spending so much time on outdoors activities?
另一些人认为这种活动会占用学生大量的时间，妨碍他们的学习。
Other people think this activity will take up plenty of time of students and get in the way of their study.
研究人员观察了一些可能导致幸福感下降的活动所花费的时间。
The researchers looked at time spent in a number of activities that could plausibly be driving the wellbeing decline.
不同种族的室友在一起的时间更少，共同参与的活动也比白人组合少。
The interracial roommates spent less time together, and had fewer joint activities than the white pairs.
大多数人认为学生应该少花时间记忆事实，给创造性活动更多的空间。
Most said students should spend less time memorizing facts and have more space for creative activities.
由于吃饭、睡觉和料理家务，许多美国人几乎没有时间参加休闲活动。
With the time spent eating, sleeping and taking care of the household duties, there's little time left for leisure activities for many Americans.
他们发现，一般人在刷牙、梳头等个人活动中最常走神，约有65%的时间在走神。
They found that the average person's mind wandered most frequently about 65% of the time during personal activities, such as brushing their teeth and combing their hair.
在大约15岁左右的时候，由于学校、工作和其他活动的压力，这些男性自愿开始减少夜间睡眠时间。
At about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities.
但在大约15岁左右的时候，由于学校、工作和其他活动的压力，这些男性自愿开始减少夜间睡眠时间。
But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work, and other activities.
我的寄宿父母在我的业余时间组织了很多活动，这样我就不会想家或感到孤独。
My host parents organized a lot of activities in my spare time so that I wouldn't miss home or feel lonely.
为什么不创造更多的时间去远足、放风筝或做一些其他的户外活动呢？
Why not create more time to go hiking, fly kites or do some other outdoor activities?
在确保有足够的时间用于学术科目和课外活动的同时，兼职是平衡成本的好方法。
A part-time job is a good way to balance costs while ensuring there is enough time left over for both academic subjects and after-class activities.
相反，潜在假设是节省下来的时间将用于促进社区的社会和经济发展活动。
The underlying assumption was that the time saved would be used instead for activities that would improve the social and economic development of the communities.
同时，要确保看屏幕的时间不会取代健康的睡眠、锻炼、做作业和其他活动。
Also, make sure that screen time does not take the place of healthy sleep, exercising, doing homework and other activities.
当被问及要放弃什么活动一周时间最难，48%的人说是听音乐。
When asked which activity would be the most difficult to give up for a week, 48% said listening to music.
随着罗马帝国向北扩张，它构建活动图的大部分时间是在太阳年前后。
As the Roman Empire expanded northward, it organised its activity chart for the most part around the solar year.
专注学业“技能训练”大大减少了课间休息和自由活动的时间。
The focus on academic "skills and drills" has cut deeply into recess and other time for free play.
自2006年以来，上网时间翻了一番，而与此同时，社交媒体的使用也已经从定期活动变成了日常活动。
Online time has doubled since 2006, and social media use has moved from a periodic activity to a daily one in the same period.
越来越多的年轻人选择把时间花在电子设备上，而不是参加其他活动，不论是什么类型的活动。
More and more, young people choose spending time on their electronic devices over engaging in other activities, regardless of the type.
多年来，很多学者坚持认为，上网时间不一定会占用花在传统媒体或者其他活动上的时间。
Over the years, many scholars have insisted that time online does not necessarily take away time spent engaging with traditional media or on other activities.
吉姆和埃米莉参加学校的各种活动，但他俩大多数时间也待在家里。
Jim and Emily are involved in school activities, but they too spend most of their time at home.
在新的城市和小镇，由于其空间的限制，那里的居民必须要知道确切的时间且安排好时间，以组织集体活动和分配空间。
The new cities and towns, squeezed by their walls, had to know and order time in order to organize collective activity and ration space.
一些人认为中学生参加有组织的体育活动是有益的，而另一些人则认为体育活动是浪费时间。
Some people feel that high school students benefit from participating in organized sports, while others feel that sports is a waste of time.
研究人员观察了人们在一些活动上花费的时间，这些活动似乎是导致幸福感下降的原因。
The researchers looked at time spent in a number of activities that could plausibly be driving the well-being decline.
由于吃饭、睡觉和料理家务，许多美国人几乎没有时间参加休闲活动。
With the time spent eating, sleeping, and taking care of household duties, there's little time left for leisure activities for many Americans.
许多学者声称，花时间在电子设备上并不一定意味着减少其他活动的时间。
Many scholars claim that spending time on electronic devices doesn't necessarily mean a decrease of time for other activities.
在这样的生命史策略中，有机体暂停任何生长、繁殖或其他活动一段时间，以便它们可能在更晚、更适宜生存的时间发生。
In such a life history strategy, the organism suspends any growth, reproduction, or other activities for a period of time so that they may occur at a later, more hospitable time.
在过去十年左右的时间里，美国青少年对社交媒体的使用从偶尔的活动变成了日常活动。
Over a decade or so, American teens' social media use shifted from an occasional activity to a routine one.
在电视发明之前，人们会把空闲时间花在更积极的消遣和社会活动上。
Before the invention of television, people spent their leisure time in more active and social pursuits.
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