54
8这些变化重新塑造了我们的喉部，将喉咙进一步向下移，我们颈部开始变长的原因也就是因为我们的舌头向下移动，喉部拉低，需要更多颈部空间容纳⬇️⬇️。
会手语的koko：
鸟的鸣管：
封面： Martha Rich
片尾曲：万晓利-鸟语 (LIVE@鐵花村 2012.02.17.)
片头曲/BGM：B minor, Probably 编曲：兔子博士
参考：
From Grunting To Gabbing: Why Humans Can Talk
It only takes a few gene tweaks to make a human voice
Koko The Gorilla Probably Doesn't Understand Climate Change
Signing, Singing, Speaking: How Language Evolved
Talk, Talk, Talk: One Thing We Do Better than Apes
Why parrots can talk like humans
“语言基因”FOXP2跌下神坛
