Welcome to the forum, Wvdm.
This symbol, /ə/, known as schwa, is the unstressed vowel that we hear in BrE in such words as until - and about, the, ration, Russia, photographer, cemetery, thorough, bureaucrat, station, invasion, patient, pigeon, gorgeous, gynaecology, forget, failure, status
/əʊ/ represents the diphthong we hear in BrE 'nose'. In AmE, the sound is closer to /oʊ/
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