ululation

1. He heard far off the ululation of his putsuers.
   他听见远处追逐他的人的喊叫声。
2. The appearance of ululation of apes together with the imagery of maple in poems is an auditory echo of seeing and this forms a double-imagery and sublimates the subjective feelings of poets.
   枫树与猿声并行出现在作品中是视觉与听觉的互应，是双重意象的叠加，并以此升华了作家的主观情感。

noun

1. a long loud emotional utterance
   1. he gave a howl of pain
   2. howls of laughter
   3. their howling had no effect

   Synonym:    howlhowling