...find out the deficiencies of the system, so as to correct...
a英语发音也不是很标准 English pronunciation is not very standard [translate] a她不是很有名 She is not very famous [translate] a这套钢琴教程将选取有代表性的中国乐曲,分为初级、中级和高级三个阶段,制作完成后向全世界进行推广和发行, This set of piano course will select has the representative ...