back and forth片語KK [bæk ənd fɔrθ] /bæk ənd fɔɹθ/發音片語1來回、往返He paced back and forth in the waiting room for an hour.他在候診室裡來回踱步了一個小時。2反覆、來來回回We emailed back and forth for weeks before settling on a date.我們來來回回通了好幾週的郵件才定下日期。名詞1來回交流、反覆商討、爭論After months of back-and-forth, the two sides finally signed the contract.經過幾個月的來回商討，雙方終於簽了合約。形容詞1來回的、反覆的The back-and-forth negotiations left everyone exhausted.反覆拉扯的談判讓所有人都疲憊不堪。