noun🔗Share发夹，簪子 A pin or fastener for the hair."She used a hairpin to keep her stray hair out of her eyes. "她用一根发夹把额前的碎发别开，这样头发就不会挡住眼睛了。appearanceitemChat with AIVocabulary GamePractice Reading
noun🔗Share发卡结构 A kind of ribozyme; hairpin ribozyme."The scientist studied the hairpin to understand how it cuts RNA molecules. "这位科学家研究了这种发卡结构，以了解它是如何切割RNA分子的。biologybiochemistrymicroorganismChat with AIVocabulary GamePractice Reading
noun🔗Share发夹弯，急转弯。 A very tight bend in a road."The bus slowed to a crawl as it approached the hairpin turn on the mountain road. "巴士在接近山路上的发夹弯时，速度慢得像在爬行。waygeographyvehicleChat with AIVocabulary GamePractice Reading
noun🔗Share渐强记号，渐强符号 An elongated v-shaped sign placed underneath a staff to indicate a crescendo"The music teacher pointed to the hairpin on the sheet music, indicating that the volume should gradually increase at that point. "音乐老师指着乐谱上的渐强记号，示意到这里音量应该逐渐增大。musicsignChat with AIVocabulary GamePractice Reading
