bait-and-switch
US /ˈbeɪt ən ˈswɪtʃ/
UK /ˈbeɪt ən ˈswɪtʃ/

1.
誘餌銷售, 先誘後轉
a sales tactic in which a customer is attracted by the advertisement of a low-priced product but is then encouraged to buy a more expensive one
:
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The store was accused of a bait-and-switch tactic when the advertised laptop was unavailable.
當廣告中的筆記型電腦缺貨時,這家商店被指控採用誘餌銷售策略。
•
Be wary of online deals that seem too good to be true; they might be a bait-and-switch.
警惕那些看起來好得令人難以置信的線上交易;它們可能是誘餌銷售。