It is human,perhaps, to appreciate little that which we have and to long for that which we have not.

熱心網(wǎng)友

這是一個(gè)強(qiáng)調(diào)句,兩個(gè)that分別引導(dǎo)兩個(gè)定語(yǔ)從句。也許,這就是人類(lèi),很少珍惜現(xiàn)在擁有的,又渴望擁有現(xiàn)在沒(méi)有的。