Parents who playfully babble to their babies may be giving them much more than tender affection, some scientists say. Patricia Kuhl, of the University of Washington, and her coworkers studied infant - directed speech of three different languages — Russian, Swedish, and English.
इसमें ज़्यादा खून बहता है, ज़्यादा समय तक बेहोशी रहती है और संक्रमण की संभावना बढ़ जाती है । ”