公司正在与供应商谈判以降低原材料价格。

The company ___negotiates with suppliers to reduce material costs.

登山者小心翼翼地通过了狭窄的岩缝。

The climber carefully ___negotiates the narrow crevice.

经纪人与买家协商股票的销售事宜。

The broker ___negotiates the sale of the stocks to the buyer.