adj.未成熟的；缺乏經(jīng)驗(yàn)的
He was a callow youth when he joined the newspaper. 他進(jìn)報(bào)社時(shí)還是個(gè)乳臭未干的小子。
I believed a lot of things in my callow youth that I don't believe now. 在我年輕尚無(wú)經(jīng)驗(yàn)時(shí)相信的許多事情，現(xiàn)在我不相信了。
