气候变化会间接影响粮食产量，导致价格上涨。

Climate change affects food prices ___indirectly by impacting crop yields.

他没有直接拒绝，而是委婉地表达了不同意见。

He didn't refuse directly, but expressed his disagreement ___indirectly.

她在谈话中委婉地表达了对新政策的不满。

She expressed her dissatisfaction with the new policy ___indirectly during the conversation.