时间的推移，活动地域的变迁，社会成员民族成分比例的改变等一系列变化，反映到语言上，就造成了满语地名语音上的复杂性。
Such variations as time, living area and changes in proportion of different ethnic groups in a society all contributed to the complicated pronunciation of place names in Manchu.
与众不 同的肥沃土性和口感很好的单宁成分为该酒提供了“骨架”，他们又与丰美的葡萄相混合，确保该酒经过多年时间能够进一步增加复杂性。
The distinguishing rich, loamy earthiness and fine ripe tannins provide structure and mingle with lush fruit, ensuring that the wine will develop additional complexity over many years.
由于中药化学成分的复杂性，中药成分分析一直存在着分离难度大、分析时间长等问题。
However, due to the complexity of the chemical constituents of CHMs, it is difficult to separate them on column within a short time.
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