know (something) by heart

To have learned or memorized something completely. Ask Becky to recite the poem—she knows it by heart. I can't sing that song in front of an audience if I don't know the words by heart!

know something by heart

Fig. to know something perfectly; to have memorized something perfectly. I know my speech by heart. I went over and over it until I knew it by heart.

词组	know (something) by heart
释义	know (something) by heart know (something) by heart To have learned or memorized something completely. Ask Becky to recite the poem—she knows it by heart. I can't sing that song in front of an audience if I don't know the words by heart! See also: by, heart, know Farlex Dictionary of Idioms. know something by heart Fig. to know something perfectly; to have memorized something perfectly. I know my speech by heart. I went over and over it until I knew it by heart. See also: by, heart, know McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. See also: know by heart rote by heart learn (something) by heart learn by heart by rote commit (something) to memory commit to memory encyclopedia a walking dictionary, encyclopedia, etc.
随便看	get some yokes on gets one right here get spliced get spun get square with get square with (one) get squiffy get started on get started on (something) get/start off on the right/wrong foot get steamed up get steam up get stiffed, to get straight get straight from the horse's mouth get straight to the point get stuck in get stuck into (something) get stuffed get stupid get stupid drunk get/take a grip/hold on yourself get, take, etc. a free ride get/take flak get/take it into your head that...