As the mother struggles to keep herprize,母親拼命要保住它的戰利品時

struggle的常見用法：

1、是不及物動詞,與介詞against連用,表示“同與之對立或對抗的人或物進行斗爭”; 與介詞for連用,表示“為…而斗爭”。

They have learned to struggle against adversity.

他們已經學會同逆境做斗爭。

They were poor and had to struggle for a living.

他們很窮，必須為生活而掙扎。

2、struggle可接動詞不定式作目的狀語。

詞義辨析:struggle against, struggle with這兩者都有“反抗”的意思。其區別是：

struggle against指在艱苦的環境下奮起反抗或斗爭; struggle with指試圖控制或征服對方。

He failed to struggle against temptation.

他沒能經住誘惑。

His life was a hard struggle with sickness.

他一生跟疾病作了艱苦的斗爭。

The mother doesn't know that her hungry young are leaving their nest in search of a better provider.做母親的不知道它饑餓的孩子正離開巢穴尋找更好的供養者

in search of尋求； 尋找

I went in search of a doctor for my sick wife.

我去請醫生為妻子看病。

The scientists are in search of a new element.

科學家們正在尋找一種新元素。

She returns to find that her nest is empty.它回來了，卻發現巢穴空空如也

return to回到

Exiles long to return to their native land.

流亡者們渴望回到自己的祖國。

I'll return to this point in my lecture in a little while.

過一會兒我還要回過來講這個問題。