The elaborate arrangements in the plot are inseparable from author's grasp of various plot types, and the whole chapter runs through chronological plot types.
《左传》在情节上的精心安排与作者对各情节类型的把握是分不开的，全篇贯穿着编年体式的情节类型。
2
The orderly arrangements of plot in the libretto, together with the obscurely formed music and sound contribute to the"vibrato"of the musical form.