He only included indigo in his fundamental "seven colors of the rainbow" so that they would match the number of notes of the western musical scale: Do re mi fa so la ti... yeah.

他在“七色彩虹”中引入靛色只是为了和西方的音乐音阶数量相配：哆来咪发嗦啦啼就酱紫。

youdao

I.C.C.countries also agreed to delay any action by the court on aggression until they re-examine the issue in seven years.

VOA: special.2010.06.21

"They're seven points clear of seventh-placed Blackpool with three games left, it would be a tall order to drop out after that, " Ratcliffe told BBC Sport.

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There's 30 to 40 million of them in the population and, by some estimates, they're maybe seven percent poorer.

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Moore said Disney security pulled his actors aside and demanded to know why they had entered and then re-entered the park within a seven-minute period.

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