We notice that an enemy's range of observation should be large to cover all ground.

我们注意到敌人的观察范围应该要足够大使其能盖住整个地表。

youdao

At the stable he picked a gentle horse, and they were soon out of range of either public observation or hearing.

在马厩里他挑了一匹温顺的马，他们不久就驶出了可能被人看见或听见的地段。

youdao

An artificial random disturbance is carried out for some seismological observation data in the allowance range of seismological observational error with random disturbance method.

采用随机干扰方法，在地震观测误差容许值范围内，对地震观测资料进行人为随机干扰。

youdao

F-18 accidentally bombed one of its own observation towers on the firing range.

ECONOMIST: Weapons testing

Such events occur, he says, because the rules we infer from the observation of events never contain the full range of possibilities.

FORBES: Chaos Theory, Financial Markets, and Global Weirding

Mr. Magill's range is extraordinary, and his wit, erudition and powers of observation give credence to judgments that might otherwise strike us as just a tad, well, insincere.

WSJ: Book Review: Sincerity