I doubt they've ever seen a human in a tree before. 我怀疑它们从没见过人类在树上
..and has seen the change first-hand. 目睹了这里的变化
it's difficult to make yourself seen... 一切的踪迹
the likes of which, to be honest, I've never seen before. 老实说 我从没见过这么大规模的农田
Quiet and shy, it's little known and seldom seen. 鬃狼安静而腼腆 它们鲜为人知 较为罕见
Today these destructive storms are some of the most powerful ever seen. 如今这些破坏性风暴是有史以来最强大的风暴之一
These hungry sisters have never seen an opportunity like this. 饥饿的姐妹俩从没见过这样的好机会
These are the first to be seen on these shores for 40 years. 这对姐妹是40年来首次被发现来到这片海岸的狮子
and seen nature in its astounding variety. 领略了自然界那惊人的多样性
that, though rarely seen, are rightly feared. 尽管难得一见 也着实令人胆战心惊