For these three weeks, we have conducted many varied activities, with the club consummating and expanding further.
这三周来，我们举办了多种多样的活动，俱乐部也在进一步完善和壮大。
In 2007, NASA scientists joined Russian scientists to travel down the river by boat for three weeks to study the transition and how these types of ecosystems may be affected by climate change.
在2007年，NASA的科学家联合俄罗斯科学家乘船考察了这条河的变迁(为时三周)，以及这种类型的生态系统可能如何被气候变化所影响。
They completed three of these abbreviated stair workouts per week for six weeks.
她们每周在楼梯间里做三组这样的简短锻炼，历时六周。
Patient: I have had it on and off for the past three years. It's just gotten much worse these past two weeks.
病人：这样断断续续地有三年了。只是过去这两个星期以来疼得比较厉害了。
We can offer you any of these samples firm for three weeks but cannot promise anything definite beyond that period in view of the heavy demand for this type of goods.
但是，鉴于这一型的商品需求量庞大，超过此期间，就无法明确地承诺。
These past three summers, my dad, Charlie, vacationed with me in California for two weeks instead.
而后的几个夏天，我的父亲，查理，只好带我去加利福尼亚度过两周的假期作为替代。
These past three summers, my dad, Charlie, vacationed with me in California for two weeks instead.
而后的几个夏天，我的父亲，查理，只好带我去加利福尼亚度过两周的假期作为替代。
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