1.settle into 有頭緒，上正軌

We'll launch the weapons the moment they settle into orbit.
一進入軌道，我們就發射武器。

To settle into your new house.
適應你的新住宅。

2.able to 能；會

He was even able to build his own home.
他現在甚至能建一所自己的房子。

How fortunate that he had been able to love!
能愛別人是多么幸運的一件事！

3.account for 說明；導致，引起

How do you account for the company's alarmingly high staff turnover?
你怎么解釋這家公司高得令人憂慮的人員流動率？

He said only 200 of the train's 600 passengers had been accounted for.
他說火車上的600名乘客中僅有200名乘客的信息得已查明。

4.rely on 信賴； 依賴；依靠

We rely on corporations like bp to bring us energy.
我們依靠像bp這樣的公司來供給我們能源。

The firm cannot rely on reputation forever.
弘毅不可能永遠依賴其名聲。