了望的英文：
observation
oversee

The officer scanned the battlefield with a binocular.
军官用双筒望远镜了望战场。

The officer scanned the battlefield with a binocular
这位军官用双筒望远镜了望战场。

A huge iceberg was suddenly spotted by a lookout
一个了望员突然发现一座巨大的冰山。

We four affectionately watched his back as he stood in the bows looking to seaward
他站在船头向海上了望时，我们四个人都热切地朝着他的背影望着。

Their eyes met and parted at once, and each resumed his absent-minded staring
他们两个人的眼光接触了一下，随即又分开，各自继续他们那无目标的了望。

NASB：Then the lookout called,
吕震中本：于是那观看者（传统∶狮子）喊着说∶「主阿，我终日不断地在了望楼上站着，我整夜无停地在我的守望所上立着。

We observed the barometer fall. [The barometer was observed to fall.]
我们看见晴雨表下降。

Observation is the best teacher.
观察是最好的老师。

They observed the behavior of their new pet.
他们观察他们新宠物的生活习性。

The professor is an acute observer.
那教授是位敏锐的观察家。

This suspect comes under observation.
这个可疑分子受到监视。

Soldiers oversee the food handouts.
士兵们看管着救济食品。

Government must help oversee this recalibration.
政府必须帮助监督这次调整。

I am in charge of overseeing the equipments of the company.
我负责监视公司的设备。

UN monitors were sent to oversee the election process.
联合国核查员被派遣去监督大选的过程。

He will now oversee global manufacturing and productivity.
他现在将监督全球制造业和生产力。