Select Create Activity: Activity class (CreatingXML).
选择创建活动：活动类(CreatingXML)。
The class extending the Activity class creates a window for a UI.
该类扩展了activity类，为UI创建了一个窗口。
At the activity class, I helped our teacher to make the music.
在活动课上，我帮助我的英语老师剪辑音乐。
The math comprehensive practice activity class is different from common math classroom teaching.
农村地区的综合实践活动课程资源与城市相比有自己独特的优势。
Now you can try to edit a class activity.
现在你可以尝试一下编辑课堂活动。
Some of us were confident and eager to take part in the class activity.
我们中的一些人充满信心，渴望参加班级活动。
Now, implement the code to select, display, and save an activity for the class.
现在，实现用于选择、显示和保存课堂活动的代码。
The behavior of the class is described using an activity graph.
通过活动图可以清楚的描述类的行为。
Now try to edit a class activity.
现在尝试编辑课堂活动。
Now, you can add a class activity using the Datepicker calendar.
现在，您可以使用Datepicker日历添加一个课堂活动。
Last week our class organized an activity to thank our teachers before graduation.
上周我们班组织了一次活动去感谢我们的老师在毕业之前。
Class activity can take me away from the heavy study, I can take in the fresh air.
班级活动能让我脱离沉重的学习，呼吸新鲜的空气。
Last week, I was so happy, because our class planned to have the activity.
上周，我很高兴，因为我们班有活动计划。
After class, we join our club activity.
下课后，我们加入我们的俱乐部活动。
Class, the teacher said the decision to cancel the activity and why.
课堂上，老师说了取消活动的决定和原因。
Sure. First it's the deadline for after-class activity application.
当然了。首先下周是课后活动申请的截止日期。
Today is planting day. Our class have a meaningful activity.
今天是植树节。我们班举行了一次有意义的活动。
Unable to pass an object of a class from one activity to another?
无法通过一个类的对象从一个活动到另一个？
Yesterday, our class had a public benefit activity.
昨天，我们班进行了一场公益活动。
Last week, I was so happy, because our class planned to have the activity.
上周，我很高兴，因为我们班计划举行一个活动。
While the class seemed like a frenzy of activity, very little learning actually occurred.
虽然教室里的活动看起来热火朝天，其实与学习无关。
Our class have a meaningful activity.
我们班举行了一次有意义的活动。
So, how to design reasonable and valid English instructional activity in class becomes very important.
因此，设计出合理、高效的英语课堂教学活动就显得尤为重要。
Accumulate languages in the class activity.
在班级活动中积累语言。
She involves her students in every activity in class.
在课堂上，她让同学们参与每项活动。
When choosing an activity, a gym, or an exercise class, make convenience a top priority.
当选择一项运动的时候，健身房或锻炼班时，让方便第一。
Hetercyclics represent an important class of compounds for their biological activity and medical value.
杂环化合物是一类具有生物活性、医学价值的重要物质。
Hetercyclics represent an important class of compounds for their biological activity and medical value.
杂环化合物是一类具有生物活性、医学价值的重要物质。
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