TO-ING AND FRO-ING
Meaning of TO-ING AND FRO-ING in English
to-ing and fro-ing BrE AmE ˌtu ː ‿ɪŋ ən ˈfrəʊ ɪŋ AmE -ˈfroʊ ɪŋ
▷ to-ings and fro-ings ˌtu ː ‿ɪŋz ə n ˈfrəʊ ɪŋz AmE -ˈfroʊ ɪŋz
Longman Pronunciation English Dictionary.
Английский словарь произношений Longman.
2012