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用电子贺卡代替纸质贺卡。
Send an e-card instead of a paper card.
youdao
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传统的贺卡和书信不是环境友好型的，因为它们是纸质的。
Traditional CARDS and letters are not environment-friendly as they are made of paper.
youdao
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传统的贺卡和书信不是环境友好型的，因为它们是纸质的。
Traditional CARDS and letters are not environment-friendly as they are made of paper.
youdao