Grow 是成长的意思,而appear 则是显示或者看来的意思。区别很大,可以从以下例子看出:

It appears you have grown up so much, everyone needs to grow up, live independently, then contribute back to their parents and society. 看来你已经长大了,每个人都需要长大,独立生活,然后回馈父母和社会。