The ability to distinguish between similar memories depends on a tiny strip of brain tissue called the dentate gyrus.

区分相似记忆的能力依赖于一小块被称为齿的脑组织。

They injected a mixture of chemicals into a part of the mice's brains involved in memory formation called the dentate gyrus.

他们将一种化物质的混合物注入小鼠大脑中与记忆形成有关的部分，称为齿。

Studies in mice have shown that the dentate gyrus is one of the few bits of the brain to generate new neurons even in adulthood.

对老鼠的研究表明，即使在成年后，齿也是大脑中少数几个会产生新神元的部位之一。

After being injected, the cells in the dentate gyrus would begin to produce channelrhodopsin-2, making the cells themselves sensitive to light as well.

注射后， 齿中的细胞会开始产生 channelrhodopsin-2，使细胞本身也对光敏感。

Then evidence began to emerge of young neurons in the brains of adult rats and mice, -specifically in the olfactory bulb, which processes smell, and the dentate gyrus.

随后，成年大鼠和小鼠的大脑中出现了年轻神元的证据，特别是在处理气味的嗅球和齿中。

Radial gates control how much water is released and massive  concrete blocks at the bottom of the chute, called dentates, disperse the flow to reduce erosion as  it crashes into the Feather River.

径向闸门控制释放的水量，滑槽底部的巨大混凝土块（称为齿）可以分散水流，以减少水流流入羽毛河时的侵蚀。