Hoping to discover what language a child would speak if he heard no mother tongue, he told the nurses to keep silent.
他希望发现一个没有听到母语的孩子会说什么语言,他让护士们保持沉默。
2
It is often a lingua franca of conferences, for example, and many journal articles in fields as diverse as astronomy, child psychology and zoology have English as a kind of default language.