【环球英语】相信你的记忆 (6)

英语自学网

HINTS:
        "cortex"
        millimetres
        70,000 million
But researchers say this is not how it works. Instead, our memories are much more complex. Experts say that our brains divide our memories into many parts. The brain stores the sounds, sights, smells and tastes that you remember in different areas. Let's look a little closer at how the brain recreates memories. The brain has an outer layer around an inner mass. The outer layer is called the "cortex". The cortex is only a few millimetres thick. But it holds about 70,000 million brain cells.