translation.en: Probably, according to what many linguists believe, fully modern language, syntactic language -- subject, verb, object -- that we use to convey complex ideas, like I'm doing now, appeared around that time.
translation.zh: 很有可能，根据很多语言学家所说， 完整的现代语言，句法语言 — 有主语，动词，宾语的 — 就像我现在用来的传达复杂信息的语言，也是这时候开始出现的。