Translate the following underlined sentences into Chinese.Several years ago it became customary to talk about "language acquisition" (语言习得) in preference to "language learning", especially with reference to a first language. The reason

Translate the following underlined sentences into Chinese.Several years ago it became customary to talk about "language acquisition" (语言习得) in preference to "language learning", especially with reference to a first language. The reason was that the process of language "acquisition" was viewed as a biological process of growth rather than as one of social learning or deliberate teaching.

几年前，特别是就第一语言而言，人们开始更多地讨论“语言习得”，而不是“语言学习”。