1.keep an eye on 照看； 照管； 留心； 注意

Can you keep an eye on things for the next few days?
以后的幾天，你可以幫我照看一下嗎？

Smart homes could keep an eye on elderly people and allow them to be more independent.
智能型家庭可以照看老年人，并且讓他們更加的獨(dú)立一些。

2.send out 發(fā)送； 發(fā)出；長出

Let's send out some invites and see who shows up.
讓我們發(fā)出邀請看誰能夠嶄露頭角。

Once service was restored, the regime used the network to send out propaganda messages.
沃達(dá)豐的服務(wù)曾一度恢復(fù)，但埃及政府隨即借助該網(wǎng)絡(luò)發(fā)送宣傳消息。

3.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.
公司不可能永遠(yuǎn)依賴其名聲。

4.back by 回來的

The first concert was put back by six days.
第一場演唱會(huì)曾被推遲了六天。

But earlier this month the timetable was pushed back by at least three months, to early 2013.
但本月早些時(shí)候其上市時(shí)間至少被后推三個(gè)月，至2013年初。