Training for our new processors will take place over a three-day period in July.

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over a period of time  一段時間.

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Regardless of the cost, it is usual for people to buy their houses over a period of time.

不論價錢高低，人們通常要花一段時間才能買下房子。

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take place

舉行; 發生The accident took place only a block from his home. 這個事故發生在離他家只一個胡同的地方。

The dance will take place after the graduation ceremony. 畢業典禮之後將舉行舞會。

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