Living withowt an aim is like is like sailing without a compans什么意思

Living withowt an aim is like is like sailing without a compans什么意思 ai和an怎么区分 为什么拼音AI和AN分不清为什么 living with an aimliving是什么词性? 已知数列an中an=2^n/(2^n-1) 求证∑ai(ai-1) ai. living living Living living living Living living answer 发音an应该怎么发音 ai 还是 ang 圈出前鼻韵母,ai,an,ou,un,iu,in,en.快 语文中的ai an ie怎么区分 拼写时 对任意n∈N+,数列an>0,∑ai^3=(∑ai)^2,求证an=n 在数列｛an｝中,已知a1=2,an+1=2an/[（an）+1],且满足∑（n,i=1）ai（ai-1）