2have something at your/their etc fingertipsKNOW somethingto have knowledge or information ready and available to use very easily 手头有某物〔可供随时使用〕,对某物了如指掌
We have all the facts and figures at our fingertips.
我们手头掌握所有的详细资料。
3to his/her fingertipsBritish EnglishBrEVERY in all ways; completely 完全,十足
She’s British to her fingertips.
她是地道的英国人。
Examples from the Corpus
to his/her fingertips• A tinyknot of tensionthrobbed at the back of her neck, running the length of her arms to her fingertips.• There was a glorioussunsetrush of pure-blooded warmth all over her back and right down to her fingertips.• The spark ing leaptto his fingertips, and he was in her trance, his own skin alert to hers.• He was a musicianto his fingertips and he had a very subtleunderstanding of the interplay of characters on the stage.• A calmemanated from the place, moving down through his torso and out to his fingertips.• Though since Cara was a professional to her fingertips she supposed that she would.