点击下方单词,选择对的这个单词
及物动词
名词
1. 图钉A thumbtack is a short pin with a broad flat top which is used for fastening papers or pictures to a board, wall, or other surface.
1. a tack for attaching papers to a bulletin board or drawing board
Synonym: drawing pinpushpin
多通过句子记忆单词,而不是单独死记硬背。