bill and coo的用法和樣例：
例句
用作不及物動(dòng)詞 (vi.)
- It makes me happy to see young lovers billing and cooing as they stroll through the park.
看到年輕的戀人們喁喁私語(yǔ)溜達著(zhù)穿過(guò)公園時(shí)，我感到很高興。
詞匯搭配
- bill and coo 喁喁私語(yǔ)(嘰嘰咕咕地...
