In 1958, Australian scientist David Warren developed a flight-memory recorder that would track basic information like altitude and direction.

1958年，澳大利亚科学家戴维·沃伦开发了一种飞行记录仪，可以追踪飞行高度和飞行方向等基本信息。

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Some memory has to be used to keep track of all those reverse mappings.

不得不用一些内存来保持对所有那些反向映射的追踪。

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A succession of smooth, grey sandy coves was soon a memory as the track started to weave inland, darting back occasionally to the water to rinse off the heat.

不久，一连串灰色平坦的小海湾就成了回忆，火车开始驶进内陆，偶尔会驶到水边，像是要消解一下炎热。

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So, these memory cells are a way that your immune system keeps track of antigens that it's been exposed to for even if maybe the plasma cells that were producing antibody in response to the initial exposure have died and disappeared.

所以,这些记忆细胞,是人体免疫系统记忆抗原的一种方法,即使由浆细胞产生的抗体,在初次免疫应答中全部被消灭,记忆细胞仍然能迅速分化为抗体分泌细胞

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Stateless devices were cheaper and simpler to create, requiring less memory and processing to keep track of things.

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They've held "Vigils Against Violence" the last Sunday of every month and maintain justice4jenna.org, a Web site devoted to her memory and to the effort to track down her killer.

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"Within the living memory of all of us, Republicans were on track to become a permanent majority, " he said in a statement.

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