| 单词 | shrill whistle |
| 释义 | shrill whistle When scared, puku repeat a shrill whistle sound. Retrieved from Wikipedia CC BY-SA 3.0 They have a distinctive shrill whistle followed by a rapid whinnying call. Retrieved from Wikipedia CC BY-SA 3.0 Some personal safety apps emit a loud intermittent shrill whistle, in the manner of a personal alarm. Retrieved from Wikipedia CC BY-SA 3.0 River otters can produce a snarling growl or hissing bark when bothered, and a shrill whistle when in pain. Retrieved from Wikipedia CC BY-SA 3.0 Excess steam was also used to operate a small, shrill whistle to further attract attention. Retrieved from Wikipedia CC BY-SA 3.0 |
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