swapping [swɒpɪŋ]

以下由轻松背单词网站提供

附加级

交换，交换技术

The slow swapping and buying of horses went on. 马匹的买卖和交换就是这样慢慢地进行着。
He was quite keen on swapping books with friends. 他非常热衷于和朋友们交换书籍。