How much influence this buys the Americans is debatable: they tread a fine line between giving advice and appearing to dictate.
购买美式装备有多大影响尚无定论：美国人在给出意见和莅临指导之间如履薄冰。
2
Call your state's stop smoking line for free advice, nicotine substitutes, and a plan.
打电话给你所在州的戒烟热线，可以得到免费的建议、尼古丁替代品和一个戒烟计划。
3
Participants were significantly more likely to follow advice they had paid for - and change their answers in line with it - compared with advice they received for free.