夏天开始于一年中最长的一天。
水在水泵地压力下，留过热交换机，并把从夏天开始就一直储藏在这里的热量带走。
Water is pumped through the heat exchangers to pick up the heat stored during summer.
夏天开始的时候，国内外都有些好消息。
奥巴马先生还许诺要在今年夏天开始撤军。
Mr Obama also promised to start bringing the troops home this summer.
以美国的审判定于今年夏天开始。
The United States-based trial is slated to begin this summer.
他们去年夏天开始学习英语。
这个系统在今年夏天开始上线，并且已经有了4万活跃用户。
The system went live this summer and already has 40, 000 active users.
然而，谷歌却在最近这个夏天开始支持联邦通讯委员会的方法。
Google, however, had supported the FCC's approach as recently as this summer.
因此，在这个新的班级度过的这个夏天开始就一帆风顺。
从去年夏天开始，我刚写信给我的笔友，轿车、谁住在土耳其。
Since last summer, I have written to my pen pal, Seda, who lives in Turkey.
主要的指数差不多都是在这个夏天开始时，也就是六月底进行交易。
Major indexes are trading more or less where they started the summer in late June.
从上个夏天开始，由于经济状况的下滑，再生产品的价格下跌了一半甚至以上。
The economic downturn has cut prices for recyclables by half or more since last summer.
夏天夏天充满欢乐。天开始变热了。
Summer Summer is full of fun.The weather starts getting hot.
夏天夏天充满欢乐。天开始变热了。
Summer Summer is full of fun. The weather starts getting hot.
夏天夏天充满欢乐。天开始变热了。
Summer Summer is full of fun. The weather starts getting hot.
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