名词
中文翻译：Unknown
同义词：
['drop in call', 'downline call']
例句：
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1. The company's customer service has seen a significant drop in calls recently.
该公司的客户服务近期接到的电话明显减少。
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2. The new software update has led to a noticeable decrease in phone calls.
新的软件更新导致电话呼叫数量显著下降。
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3. During the pandemic, many businesses experienced a significant drop in their customer base.
在疫情期间，许多企业的客户基础大幅减少。