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INTERMEDIATE LEVEL
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OXF3000N 
sự huýt sáo sự thổi còi huýt sáo thổi còi 
whistle
like: thổi còi → →
The referee blew his whistle. ☊ blow ☊
to sound/toot your horn ☊ horn ☊
The referee finally blew the whistle to stop the game. ☊ whistle ☊