这项研究强调了早期儿童教育的重要性。
The study ___underlines the importance of early childhood education.
我们必须强调博物馆在保存历史方面的价值。
We must ___underline the value of museums in preserving history.
演讲者在演示中强调了关键点。
The speaker ___underlined the key points during the presentation.