(1). People with a high IQ or educational level showed a higher income
as compared with those with a low IQ or educational level, respectively.
(2). People with a high IQ and educational level showed a higher income
as compared with those with a low IQ and educational level, respectively.
我是要说
high IQ 跟 low IQ 的比起来
以及
high educational level 跟 low educational level 的比起来
income 有差
哪一句比较对？
又 respectively 是不是只能用 or 或是 and 其中之一？意思有差吗?
Thanks

用and就失去用respectively的意义了这句用or => 有两个头各跟自己的尾巴做连结用and => 有一个头各跟自己的尾巴做连结...?