音阶，调性，调号，五度循环，等等。
当半音不属于该调，并且无调号时需要加变音记号。
They are needed when chromatic notes foreign to the key and not indicated in the key-signature occur.
你知道，坐协调号城际特快列车，从上海去那儿那里很便利。
You know, from shanghai to Hangzhou, it is really convenient to go by CRH (china railway highspeed), namely, the inter-city express.
调号位于一篇音乐作品或一章节的开始部分，来表示该作品或章节的调域。
A key signature is placed at the beginning of a piece of music or of a section to indicate the key of the piece or section.
如果你是在瑞典暂住，可以向税务部门申请一个协调号，它将代替人口号，允许你申请“F -税种”资格。
If you are a temporary resident in Sweden, you can apply to the tax Authority for a co-ordination number, which replaces the personal identity number and will allow you to apply for F-tax status.
如果你是在瑞典暂住，可以向税务部门申请一个协调号，它将代替人口号，允许你申请“F -税种”资格。
If you are a temporary resident in Sweden, you can apply to the tax Authority for a co-ordination number, which replaces the personal identity number and will allow you to apply for F-tax status.
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