美 [ɡreɪv ˈæksent]
重音符号：在英语诗歌中，通常用于表示非音节结尾的-ed发音。在其他语言中，也用于表示元音的音质或音量。在汉语转写中，也用于表示音节的降调。
a mark (`) placed above a vowel to indicate pronunciation
同义词： grave
重音符
抑音符号
Matches modifier symbols such as circumflex accent , grave accent , and macron.
匹配修饰符号，如抑扬音、抑音符号和长音符号。
If any part of a shell command is enclosed by back quotes (a character also known as a grave accent), it is executed and the output placed on the command line.
如果shell脚本的某一部分用单引号(也称为重单符)括起来，那么将执行这个部分并将结果放在该命令行内。
The only written accent is the grave, which is used when-ever a word of more than one syllable stresses the final vowel (città—city).
唯一的标音符号是“、”，这个符号在两个音节以上的词的重音落在最后的元音上时使用（città；
It has often been described by biographers as high-pitched with a Kentucky accent, and this was difficult to reconcile with the grave baritone we associate with the man reading the Gettysburg Address.