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?