1、
This sale sounds like sharp practice to me and I want nothing to do with it.
这笔生意听起来好像有点敲竹杠，我不想做这笔买卖。
《汉英大词典》
2、
3、
Firms may offer special deals for valid reasons such as boosting sales sharp practice.
因为厂商有可能确实有充足理由才推出特别价格,比如增加销量.
互联网摘选
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