Abstract Adult late-L2 learners are the main source of participants for research on utterance fluency. Although there are ample opportunities to study these learners, bilinguals who come from a more diverse background are under-researched. This paper investigates the effects of long-term bilingualism on the second-language fluency patterns of a community of L1-Afrikaans/L2-Spanish bilinguals residing in Patagonia, Argentina. These third-generation bilinguals are dominant in their L2 and are undergoing L1 attrition. The acoustic analysis draws from a corpus of Spanish sociolinguistic interviews obtained from the bilinguals, who were compared to Spanish monolinguals on speed, breakdown, and repair fluency. For some measures (mean-syllable duration and phonation-time ratio), the bilinguals performed similarly to the Spanish monolinguals, whereas for other measures the results were mixed: the bilinguals produced less filled pauses, but used longer silent pauses and more reformulations, than the monolinguals. These outcomes are theorized within current models of L2-speech production.

中文翻译：

---

高级二语双语者话语流利模式调查

摘要 成人后期二语学习者是话语流利度研究的主要参与者来源。尽管有很多机会研究这些学习者，但对来自更多样化背景的双语者的研究不足。本文研究了长期双语对居住在阿根廷巴塔哥尼亚的 L1-南非荷兰语/L2-西班牙语双语社区的第二语言流利模式的影响。这些第三代双语者在 L2 中占主导地位，并且正在经历 L1 减员。声学分析取材于从双语者那里获得的西班牙社会语言访谈语料库，他们在速度、故障和修复流畅度方面与西班牙语单语者进行了比较。对于某些措施（平均音节持续时间和发声时间比），双语者的表现与西班牙语单语者相似，而对于其他措施，结果喜忧参半：与单语者相比，双语者产生较少的完整停顿，但使用更长的无声停顿和更多的重新表述。这些结果在当前的 L2 语音生成模型中被理论化。