national treasure國(guó)寶

one of+名復(fù)

feed on 以...為食

unique/ distinctive/ special appearance獨(dú)特外貌

image:形象

tender leaves嫩葉

body size體型

up to可達(dá)

公斤kilograms

Shaanxi陜西

reproduction繁殖

endangered species瀕危物種

be gradually improving逐漸好轉(zhuǎn)

model /example典范