国际航空运输协会总干事：由于关税的不确定性，航空公司可能不愿意接收飞机，这将对飞机成本产生影响。

Core Viewpoint - The uncertainty surrounding tariffs may lead airlines to be reluctant to accept new aircraft, which could impact aircraft costs [1] Group 1 - Airlines are facing potential reluctance in accepting new aircraft due to tariff uncertainties [1] - The cost of aircraft may be affected as a result of airlines' hesitance to accept deliveries [1]