Be due to a great variety and minute particle size and multivariate shape and great difference in particle's size, which brings difficulty to separation of pollens.
但由于花粉种类繁多、颗粒微小、不同种类花粉形状多变且大小相差很大，这给花粉的分选带来极大困难。
It is the separation that brings conflict and ugliness.
是分离带来了冲突和丑陋。
The separation of ownership and operation right brings up agency by agreement relation, unavoidably causing inefficiency.
两权分离形成了委托代理关系，委托代理关系不可避免会产生非效率现象。
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