activity cycle的用法和样例：
例句
- The author of the paper argued that scientific creativity depended on the phase of the solar cycle.
报告人争辩说，科学创造力依赖于太阳活动周期的相位。 - The sun has a new spot, and it could signal the long-awaited beginning of the next solar cycle.
太阳表面出现一个新的黑子，它可能标志着人们期待已久的太阳下一轮活动周期的开始。
activity cycle的相关资料：
临近单词
activity fad
activity
Activity Balance Line Evaluation
activity of lactate dehydrogenase
activity of extracellular amylase
activity of information retrieval
activity estimation relationships
activity- based cost management
activity based costing management
Activity - Based Costing method
activity of controlling a crowd.
activity of retinal ganglion cells
