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He has the responsibility of protecting them from the dangers
它们觅食的森林地面危机四伏
that abound on the forest floor where they feed.
银背公猩猩要负起 保护它们的责任
To sustain his huge size, he must consume up to thirty kilos a day.
体型庞大的银背公猩猩 一天要吃三十公斤的食物才会饱
It's mostly plant food,
它们主要是吃素
but western gorillas also enjoy a sprinkling of termites.
但大猩猩有时也会拿用一顿 美味的白蚁小点
The youngsters need to eat far less than their father,
小猩猩食量比爸爸小得多
so they've got time on their hands.
所以有很多空闲时间
They like to play for the same reasons we do...
它们和人类一样
for fun.
以游戏取乐
And it helps build long-lasting relationships.
同时借着游戏建立长久的友谊
Their protector keeps a watchful eye on them.
银背公猩猩 一刻也不松懈地盯着它们
But then...
但是
..it's time for his siesta.
午睡时间到了

重点解释

He has the responsibility of protecting them from the dangers银背公猩猩要负起保护它们的责任

protect from保护 ... 不受； 使 ... 免于

The plants should be protected from the cold.

应该保护这些植物使之不受冻。

He raised his arm to protect his child from hurt.

他伸出手去，保护他的孩子免受伤害。

The youngsters need to eat far less than their father,小猩猩食量比爸爸小得多

far less than远少于

Their income is far less than yours.

他们的收入远不如你。

Their protector keeps a watchful eye on them.银背公猩猩一刻也不松懈地盯着它们

keep an eye on留意； 照看

He asked his neighbour to keep an eye on his house.

他请邻居照看他的房子。

Would you keep an eye on my baby for a while?

请你照看一下我的婴儿好吗?