动词短语
中文翻译：门卖
同义词：
['door-to-door sales', 'doorstep sales']
例句：
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1. The store is offering door-to-door sales to attract more customers.
这家商店正在开展上门销售活动以吸引更多顾客。
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2. The company has decided to implement door-to-door sales strategies to increase market share.
该公司决定实施上门销售策略以增加市场份额。
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3. Many farmers rely on door-to-door sales to supplement their income during the off-season.
许多农民依靠上门销售来在淡季补充收入。