1. camouflage n. 偽裝，掩飾，迷彩服 v. 偽裝，欺瞞

Some insect have a natural camouflage which hide them from the attack of their enemy.
有些昆蟲有一種天然的保護色可以防止敵人的襲擊。

The soldiers camouflaged themselves with leaves and branches.
士兵們用樹枝樹葉把自己偽裝起來。

2. predator n. 食肉動物，掠奪者

Cats are warm and affectionate creatures to us, but viewed through the eyes of birds and mice they are vicious predators.
對我們來說，貓是熱情又充滿深情的動物，但是在鳥兒和老鼠看來，貓是惡毒的食肉動物。

Young birds are very vulnerable to predators.
幼小的鳥易受食肉動物傷害。

3. outrun vt.追過；逃脫

The favourite easily outrun the other horse in the field.
那匹熱門馬一下子就把其他的馬甩在了後邊。

He let his zeal outrun discretion.
他讓熱心超越了謹慎。

4. trust vt. 委托，相信

My husband trusts me and I don't intend to break that trust.
我的丈夫信任我，所以我不想失去這種信任。