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to phrases
speaking tube ['spi:kɪŋtju:b]
gen. Sprachrohr n
commun., transp. akustischer Telegraf; Fluestertuete
industr., construct. Sprechrohr n
med. Sprechkanüle f
mining. Sprachrohr n (Schachtsignalanlage)
speaking-tubes
gen. Sprachrohre n
speaking tube: 1 phrase in 1 subject
Metallurgy1