您要查找的是不是：
- Auroras are most commonly visible at high latitudes. They are associated with geomagnetic activity brought about by solar wind. 极光通常在高纬度的地区出现,它们与太阳风引致的地磁活动有关。
- Geomagnetic activity indicates large amplitude for sunspot cycle 24 太阳黑子周期24的地磁活动显示的大振幅
- EFFECT OF GEOMAGNETIC ACTIVITY AND SOLAR-CYCLE VARIATION ON THE RING CURRENT IONS 地磁活动与太阳活动对环电流离子成分与位置的影响
- The office has been humming with activity. 办公室一直忙着搞活动。
- The threat of war has depressed business activity. 战争的威胁使经济萧条。
- There has been a lot of activity in the town today. 今天市中心相当热闹。
- The town was humming with activity. 该市镇生气勃勃，呈现一片热闹的景象。
- Stamp collecting is my favorite activity. 集邮是我最喜爱的消遣。
- The store was a scene of great activity. 这家商店顾客盈门。
- He once engaged in anti-government activity. 他一度从事反政府的活动。
- The office is humming with activity. 办公室里一片忙碌。
- geomagnetic activity 地磁活动
- The geomagnetic field varies continuously. 地磁场不断地发生变化。
- A center of interest or activity. 中心兴趣或活动的中心
- Showing no optical activity in polarized light. 无旋光的极化光下无光学反应的
- An increase, as in movement or business activity. 进步，改进，改善运动或商业活动的进步或兴隆
- Indulgence in or pursuit of sexual activity. 纵欲; 追求肉欲对性行为的放纵或追求
- The phenomena associated with volcanic activity. 火山现象与火山活动有关的现象
- geomagnetic activity index 地磁指数
- A range of endeavor or activity; a province. 范围努力做 ... 的范围或活动范围; 范围
