His index finger steadied on my suitcase.他的食指最后指向我的行李箱停止不动了。He hushed me with his index finger against his mouth.他把食指贴在嘴上告诉我别做声。She wet her index finger and cleaned the spot off the mirror.她弄湿食指,把镜子上的污点擦掉。He suffered a hairline fracture of the right index finger.他右手食指骨裂。