The larvae must feed during their trip, and their springtime release coincides with a peak in algae raining down from surface waters.

幼虫必须在旅途中进食，而它们在春天的释放正好赶上了藻类从地表水倾泻而下的高峰。

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Core damage frequency, large early release frequency and trip likelihood. So these are now routinely used in control rooms.

核心损坏的频率，早期释放的频率，差错的可能性，所以，这些现在通常是，在控制室里使用。

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We had made a special trip to London and watched the film in Leicester Square just a few days after its release - watching it was a defining moment in my life.

我们专程去了一次伦敦并在电影公映几天之后在莱斯特广场观看了这场电影——这是我人生的关键一刻。

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In 1990, Nelson Mandela arrived in Zambia on his first foreign trip since his release from 27 years in South African jails.

CNN: Friday,

But although Davies is being kept in Wales camp, coach Warren Gatland has agreed to release four other Scarlets players for their trip to Dublin.

BBC: Wales keen to rest Scarlets centre Jonathan Davies

Clinton, 63, jumped back onto the world stage last year with an unannounced trip to North Korea on a mission to negotiate the release of two imprisoned American journalists.

CNN: Clinton was on 'frenetic pace' before heart procedure