引子用英语怎么说？

引子

例句

• The introduction presents arpeggios on the harp against a string tremolo -- an enchanting sonority. 引子,在弦乐的震音上竖琴奏出了琶音,一种迷人的音响.
• Hence, we introduce the method of reconstructing the attractor in state spaces. 然后引出重构状态空间吸引子方法并阐述其在脑电信号系统分析中的意义.
• He introduced his speech with a humorous anecdote. 他讲了一则幽默轶事作为讲演的引子.