往返 /wǎngfǎn/ meaning in English

round trip [round trips]▼(a trip from one destination to another and then returning to the starting location)
noun
[UK: ˈraʊnd trɪp] [US: ˈraʊnd ˈtrɪp]

back and forth▼(movement (of someone or something) forward followed by a return to the same position)
noun
[UK: ˈbæk ənd fɔːθ] [US: ˈbæk ænd ˈfɔːrθ]