自然音阶的

The first movement's principal melody, a conjunct and diatonic tune of elegiac character, contains several ornamental grace notes.

第一乐章的主旋律，一个带有悲伤特征的级进的自然音阶曲调，包含着一些装饰性的优美的音符。

The natural minor scale can be played on the white notes of the piano, starting on A.

自然小音阶可在钢琴的白键上演奏，始于A调。

The half steps occur between the second and third degrees of the scale, and between the fifth and sixth degree. Thus the natural minor scale of A minor can be played on the white notes of the piano from A to A.

半音介于第二级和第三级音阶间，第五级和第六级音阶间。A小调自然小音阶在钢琴的白键上演奏，从A到A。

Music based on a certain dia tonic key is said to have the tonality of that key.

如果一部音乐作品是以某一自然音阶为基础创作出来的，我们就说这部作品具有这一个调子的调性。

Nobody is born with absolute pitch, because it is a 100% learned skill (the exact frequencies of the musical scales are arbitrary human conventions -- there is no natural law that says that middle A should be 440 Hz; most orchestras tune to 442 Hz, and before it was standardized, there was a much larger range of allowable frequencies).

音阶的正确频率都是人为的–并没有一条自然定律指明中央A 是440 Hz。）若不保持这音高辨别力，长大以后这能力便会消失。幼儿的钢琴训练从三至四岁就可以开始了。从零岁开始接触古典音乐是有很多好处的，因为各种不同音乐之中，以古典音乐的分量最高。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。