D, d是什么意思

详细释义

• 0 the fourth letter of the English alphabet -- （英语字母表的第四个字母）

• 1 the sign used in the Roman system for the number 500 -- （罗马数字）500

• 2 a note in Western music -- D 音；D 调

  • in (the key of) D D 调

• 3 a D-shaped area on the edge of the penalty area of a football pitch -- （足球场上的）禁区弧

  • Players have to stand outside the D when a penalty is being taken. 罚点球时，其他球员必须站在禁区弧外。