ground zero Idiom, Proverb

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zero hour

1．the exact time when an attack or other military action is supposed to start 发动攻击的时间；采取军事行动的时间
The company was told that their zero hour was 3 a．m．连队奉命于凌晨3点开始行动。
2．the time when an important decision or change is supposed to come；the time for a dangerous action 做出重要决定或重要变动的时间；关键时刻；危急关头
It was zero hour and the doctor began the operation on the patient．那是个关键的时刻，医生开始为那个病人动手术了。

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zero in on

1．adjust a gun so that it will exactly hit a target；aim at 向…瞄准
The plane zeroed in on the enemy's arms factory and destroyed it with one bomb．飞机瞄准了敌人的军工厂，一枚炸弹就把它炸毁了。
2．give full attention to 全神贯注于；集中注意力
Let's zero in on this problem today．我们今天研究这个问题。
The children zeroed in on the toy display．孩子们聚精会神地观看玩具展览。

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Zero tolerance

If the police have a zero tolerance policy, they will not overlook any crime, no matter how small or trivial.

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zero hour|hour|zero

n. 1. The exact time when an attack or other military action is supposed to start. Zero hour for the bombers to take off was midnight. 2. The time when an important decision or change is supposed to come; the time for a dangerous action. It was zero hour and the doctor began the operation on the man. On the day of the championship game, as the zero hour came near, the players grew nervous.

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zero in on|zero

v. 1. To adjust a gun so that it will exactly hit (a target); aim at. Big guns were zeroed in on the enemy fort. American missiles have been zeroed in on certain targets, to be fired if necessary. 2. slang To give your full attention to. The Senate zeroed in on the Latin-American problems. Let's zero in on grammar tonight.

ground zero

The armpit of any disaster; specifically, and generally capitalized (Ground Zero), the armpit of New York’s World Trade Center, ashore by airplanes on September 11, 2001. Originally the appellation appointed the axial point of a nuclear bang or agnate ample blast, but back the attacks of 2001, generally referred to artlessly as nine-eleven, it has been acclimated both accurately and metaphorically. It was aboriginal acclimated with advertence to the diminutive bombing of Hiroshima and Nagasaki in 1945 and again was continued to added disasters, such as earthquakes. Referring to the bread-and-butter downturn, a appearance in Ian Rankin’s atypical The Complaints (2009) asked, “Does cipher apprehend this is Credit Crunch Ground Zero?”Learn more: ground, zero

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