#大学英语听力#
Glutamate, arguably the most important chemical in your nervous system, is older than the brain itself.
谷氨酸，可以说是神经系统中最重要的化学物质，比大脑本身更古老。
From a single cell bacterium, to mushrooms and plants, to you—every living thing on this planet relies on this tiny molecule for cellular communication.
从单细胞细菌，到蘑菇和植物，再到你-这个星球上的每一个生物都依赖这个小分子进行细胞通讯。
It is absolutely critical for everything we do.
这对我们所做的每一件事都是至关重要的。
“The function of most, if not all, of the trillions of cells in the brain are regulated by glutamate,” neuroscientist David Baker explains to me.
神经学家大卫·贝克向我解释说：“大脑中数万亿个细胞的大部分(如果不是全部)的功能是由谷氨酸调节的。”
On November 1, 2019, neuroscientists gathered at the Harley-Davidson Museum in Milwaukee, WI to share their science.
2019年11月1日，神经科学家聚集在威斯康星州密尔沃基的哈雷-戴维森博物馆(Harley-Davidson Museum)，分享他们的科学成果。
The chrome-laden motorcycle in the corner of the room was hard to ignore, but it was the presentation of Baker, a professor at Marquette University, that really caught my attention.
房间角落里装着铬的摩托车很难被忽略，但真正引起我注意的是马凯特大学教授贝克的演讲。
Baker has dedicated his career to understanding how glutamate can treat disorders of the brain.
贝克一直致力于了解谷氨酸是如何治疗大脑疾病的。
Specifically, his hopes for targeting glutamate lie in a mechanism called system xc-.
具体地说，他的靶向谷氨酸的希望在于一种称为系统XC-的机制。
Glutamate is often called the “major excitatory neurotransmitter” within the brain.
谷氨酸通常被称为大脑中的“主要兴奋性神经递质”。
It is the brain’s “go” signal.
这是大脑的“开始”信号。