swapping
[swɒpɪŋ]
n.
交换，交换技术;
v.
交换（工作）( swap的现在分词 );
用…替换，把…换成，掉换（过来）;
例句:
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Others initially resisted swapping their private offices for cubicles.
来自WSJ
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They all sat together at table, laughing and swapping stories.
他们都坐在桌子旁，有说有笑地讲述各自的故事。
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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.
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He was quite keen on swapping books with friends.
他非常热衷于和朋友们交换书籍.
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Few of us could imagine permanently swapping gender.
来自She
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Protein swapping during reproduction is not the least bit random.
来自SA