活动课是课堂教学的延伸和补充，是以活动为中心展开教学的课程。
A activity classe is the extension and supplement of classroom teaching, and it is also the course of centring on activities.
随着综合体向海岸线延伸，长方形游泳池和主要的室外区域展开来，似乎延伸到了地平线。
As the complex expands towards the shoreline, the oblong swimming pool and the main outdoor area unfold and seem to reach for the horizon.
鼠标主体具有一底面及一侧面突出，而延伸握持部具有一开口与侧面突出套接，且延伸握持部可选择性地展开。
The mouse body has one base surface and one side protrusion and the extension part has one opening covered with the side and it can optional spread.
三叶草的形状如同地球立体三维的平面展开，很像一张世界地图，它象征着三条纹延伸至全世界。
The shape of clover just like the plane when three-dimensional earth expand, and much like a map of the world. It symbolizes the three stripes extend to the world.
介绍了一种最新设计的轻质单级延伸喷管，它具有独特的可抛展开系统。
A new designed lightweight one stage extendible exit cone nozzle with the unique deployment system thrown out (EECDT) is presented.
介绍了一种最新设计的轻质单级延伸喷管，它具有独特的可抛展开系统。
A new designed lightweight one stage extendible exit cone nozzle with the unique deployment system thrown out (EECDT) is presented.
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