有一个人体部位的名称隐藏在下一段文字中,请找出来并说明原因.
有一个人体部位的名称隐藏在下一段文字中,请找出来并说明原因.
the first letter is in "fine",it's not in "nine".the second letter is in"bag",it isn't in"big".the third letter is in"cat",it isn't in 'hat. the fourth letter is in "bed",it isn't in bad. what is it?it's