to the letter片語KK [tu ðə ˋlɛtɚ] /tu ðə ˈlɛtɚ/發音片語1一絲不苟地、嚴格地、不折不扣地She followed the recipe to the letter and it turned out perfectly.她一絲不苟地按照食譜做,成品非常完美。