他在谈判中巧妙地利用自己的专业知识作为筹码。
He used his expertise as ___leverage during the negotiation.
他们利用杠杆投资策略，用较少的自有资金购买了更多的股票。
They used ___leverage to buy more stocks with less of their own money.
她利用社交媒体影响力推广自己的新书。
She ___leveraged her social media influence to promote her new book.
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