noun🔗Share发夹，簪子 A pin or fastener for the hair."She used hairpins to keep her long hair in a neat bun. "她用发夹把她的长发固定成一个整洁的发髻。appearanceitemwearChat with AIVocabulary GamePractice Reading
noun🔗Share发夹结构，发卡酶。 A kind of ribozyme; hairpin ribozyme."Scientists studying RNA discovered that some hairpins can act as enzymes, speeding up reactions within cells. "科学家在研究RNA时发现，有些发夹结构具有酶的活性，能够加速细胞内的反应。biologybiochemistryChat with AIVocabulary GamePractice Reading
noun🔗Share急转弯，发夹弯。 A very tight bend in a road."The bus struggled to navigate the series of hairpins on the steep mountain road. "在陡峭的山路上，公共汽车艰难地通过了一连串的急转弯/发夹弯。wayvehicletrafficChat with AIVocabulary GamePractice Reading
noun🔗Share渐强记号 An elongated v-shaped sign placed underneath a staff to indicate a crescendo"The music teacher pointed to the hairpins under the staff, indicating the sound should gradually get louder. "音乐老师指着五线谱下面的渐强记号，示意声音应该逐渐变响。musicsignChat with AIVocabulary GamePractice Reading
