A lookout is a place from which you can see clearly in all directions.
例句
Troops tried to set up a lookout post inside a refugee camp.部隊試圖在難民營里設一個瞭望哨。
N-COUNT
觀察員；守望員；望風者
A lookout is someone who is watching for danger in order to warn other people about it.
PHRASE
（尤指在船上）守望，警戒
If someone keeps a lookout, especially on a boat, they look around all the time in order to make sure there is no danger.
例句
He denied that he'd failed to keep a proper lookout that night.他否認當晚守望不力。
PHRASE
密切留意；小心提防
If you are keeping a lookout for something or are on the lookout for it, you are alert and careful about it, either because you do not want to miss it or because it will be unpleasant or harmful and you need to avoid it.
例句
Keep a lookout for a nasty little organization calling itself Defence Through Strength...要警惕一個自稱“實力防衛”的可惡組織。Nature lovers will be on the lookout for eagles, cormorants, and the occasional whale.自然愛好者要密切留意鷹、鸕鶿和偶爾出現的鯨魚。
英漢詞典釋義
n.
景色;遠景;前途
It’s a bad lookout for the company if interest rates don’t come down.如果利率降不下來, 公司的前景可就不妙了。
是某人(自己)的問題；由某人(自己)負責
If he wants to invest all his money in one company, that’s his lookout.如果他想把所有的錢都投到一家公司里，那是他自己的事。It’s my own lookout if I fail this exam.要是我這次考試不及格，那就是我自己的問題。
尋找( 某人/某物)
We’re always on the lookout for good computer programmers.我們一直在物色優秀的計算機程序編制員。I’m on the lookout for a good book on German history.我想找一本關于德國歷史的好書。
英英詞典釋義
Noun
1. a person employed to watch for something to happen
2. an elevated post affording a wide view
3. a structure commanding a wide view of its surroundings