A diacritical mark placed above a vowel to indicate a LONG. sound or phonetic value in pronunciation, such as ? In the word make.

长音一个发音符号，置于元音之上，表示长音或发音中的音值，如？在。

Different dynamic-models based on diacritical investigation modes, intentions and analysis angles have divergent mechanism and explanatory functions.

建立在不同空间分析基础之上的动态模型在表现形式和分析能力上有其不同的优缺点。

English and other languages used in Western Europe are based on Latin script and use only Latin characters - sometimes with added accents (diacritical marks).

英语及在西欧使用的其他语言都是以拉丁文字为基础，并且只使用拉丁字符—有时还会附加上重音符号(变音符号)。