Parallel intervals of a fifth , octave or unison are traditionally prohibited in four - part writing 五度，八度或一度音程平行传统上在四声部作品中禁用。
Its loud four - note whistle ko - ko - ta - to with the fourth note lower can be heard from mid - april 每年四月中起便听到它响亮的四音啼声： ? ?塔吐（第四声较低） 。
Doubling the third thickens the texture , and this is usually undesirable in simple four - part writing 重奏三音可增加结构的厚度，在四声部写作中通常不需要这样做。
Parallel octaves , the movement of two parts from octave to octave , are traditionally prohibited in four - part writing 八度平行是从八度到八度的两声部运动，传统上在四声部作品中禁用。
In simple four - part writing this is most evident when the leading tone ( leading note ) follows its naturally tendency to move to the tonic 在简单的四声部写作中，导音遵循其自然属性移向主音时最为明显。
Head gaps and sound records for three - , four - , or six - track magnetic sound records on 35mm motion - picture film containing no picture - positions and width dimensions 35mm磁片上三声轨四声轨和六声轨磁头隙缝的位置和宽度尺寸
Cuckoos have an extended family . on the cuhk campus , there are the indian cuckoo , the chestnut - winged cuckoo , the large hawk cuckoo , the plaintive cuckoo , and the common koel 杜鹃家族成员繁衍，中大校园内的杜鹃有四声杜鹃、红翅凤头鹃、鹰鹃、八声杜鹃和噪鹃。
The four shots came in rather a scattering volley ; but they did the business : one of the enemy actually fell , and the rest , without hesitation , turned and plunged into the trees 四声枪响合成了一阵零乱的扫射，但是弹未虚发，其中的一个敌人倒了下去，而其余那些人则毫不犹豫地转身向林中逃去。
