睡眠是人日常活动周期的一部分。
但证实太阳活动周期与天气之间的明确联系一直存在困难。 ！
在一个活动周期开始的时候，就可以找到高速气流，像中纬度地区的太阳黑子。
At the beginning of a cycle the jet stream is found, like sunspots, in mid-latitudes.
你知道太阳活动是有周期的。
经济活动常常遵循周期性模式。
太阳的活动通常在一个还算规则的周期内上下浮动。
The sun's activity usually ebbs and flows on a fairly predictable cycle.
你的广告活动时间短于你的产品销售周期。
You committed to an AD campaign that was shorter than your product selling cycle.
项目生命周期的此阶段的活动包括。
The activities in this phase of a project life cycle include.
项目生命周期的构造阶段的活动包括。
The activities in the Construct phase of a project life cycle include.
项目生命周期的此阶段的活动包括。
This activities in this phase of a project's life cycle include.
事实：测试在开发周期中不是耗时的活动。
Reality: Testing is not the time-consuming activity in a development lifecycle.
其他学者则预测这将会是有记录以来太阳周期中活动最频繁的一次。
Others predicted that it would be the most active solar cycle on record.
项目生命周期的此阶段将涉及到各种活动，如。
This phase of a project life cycle involves such activities as.
涂色与阅读活动：蝴蝶的生长周期。
商业周期的波动不仅是总的经济活动。
Business cycles are not merely fluctuations in aggregate economic activity.
如果你计划活动的生命周期内改变片段，这是必要的。
This is necessary if you plan to change fragments during the life of the activity.
细胞周期是细胞生命活动的基本过程。
工业城内部的滨水区综合体在一年一度的纽约设计周期间还举办了许多活动。
Many events during the annual New York Design Week are hosted at the waterfront complex.
钢铁行业的商业周期往往能反映一个国家的整体经济活动情况。
The steel industry's business cycles reflect the general economic activity of a nation.
钢铁行业的商业周期往往能反映一个国家的整体经济活动情况。
The steel industry's business cycles reflect the general economic activity of a nation.
应用推荐