Excuse me, what is the explanation of three ancient poems "cicada" in the second volume of seventh grade Chinese?

Year: Tang Author: Yu Shinan's work: Cicada's original work: weeping, clearing dew, flowing and dredging tung. Speak loudly from a distance, not being blown by the autumn wind. Rui: The knotted and drooping part of an ancient official hat. Cicada's head has prominent tentacles, shaped like a drooping crown tassel. Also refers to the cicada's chin, with a narrow mouth, similar to a hat band. 2 clear dew: pure dew. The ancients thought that cicadas lived by drinking dew, but in fact they sucked the juice of plants. (3) Flowing clouds and flowing water: refers to the continuous chirping of cicadas. (4) jiè: With the help of four translators, the cicada dropped its tentacles like a hat band, drank the clear dew, and the sweet cry came from the forest of Wu Tong. Because standing high, the sound naturally travels far, not being blown by the autumn wind.