请问:index finger(食指)这个词怎么来的啊?
问题描述：
请问:index finger(食指)这个词怎么来的啊?
答
由于时间因素,我就提供英文资料吧,暂且不帮你翻译了.The index finger or forefinger is the second digit of a human hand,located between the thumb and the middle finger.It is usually the most dexterous fin...