名詞 zero:

1. a quantity of no importance
   同義詞：nothing, nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zilch, zip, zippo
2. a mathematical element that when added to another number yields the same number
   同義詞：0, nought, cipher, cypher
3. the quantity that registers a reading of zero on a scale
   同義詞：zero point

動詞 zero:

1. adjust (an instrument or device) to zero value
2. adjust (as by firing under test conditions) the zero of (a gun)
   同義詞：zero in

形容詞 zero:

1. indicating the absence of any or all units under consideration
   同義詞：0
2. indicating an initial point or origin
3. of or relating to the null set (a set with no members)
4. having no measurable or otherwise determinable value

1. The probability of a peace agreement being reached is zero.
   達成和平協(xié)定的概率是零。
2. His hope was reduced to zero.
   他的希望化為烏有。
3. It was five below zero last night.
   昨夜溫度是零下五度。

ze.ro

n.（名詞）
【復數(shù)】 ze.ros 或 ze.roes 縮寫 z.
The numerical symbol 0; a cipher.
0：數(shù)字符號0；零
Mathematics
【數(shù)學】
An element of a set that when added to any other element in the set produces a sum identical with the element to which it is added.
零元素：集合中的一個元素，當它加上集合中的任何一個元素時，得到的數(shù)值等于被加元素值
A cardinal number indicating the absence of any or all units under consideration.
零：基數(shù)，表示在考慮下不存在的任一或所有的單位
An ordinal number indicating an initial point or origin.
零：序數(shù)中表示最初的點或原點
An argument at which the value of a function vanishes.
（坐標的）起點：函數(shù)自變量的值等于零
The temperature indicated by the numeral 0 on a thermometer.
零度：溫度計上數(shù)字0所示的溫度
A sight setting that enables a firearm to shoot on target.
瞄準儀：一種能使火器射中靶子的、用來調整準度的儀器
Informal One having no influence or importance; a nonentity:
【非正式用語】 無足輕重的人：沒有影響力或無足輕重的人；不足取的人：
例句：
a manager who was a total zero.
一個等于廢物的經(jīng)理

The lowest point:
最低點：
例句：
His prospects were approaching zero.
他幾乎沒有希望

A zero-coupon bond.
無收益但在贖回價格之下的債券
Informal Nothing; nil:
【非正式用語】 沒有；全無：
例句：
Today I accomplished zero.
今天我一事無成

adj.（形容詞）
Of, relating to, or being zero.
零的：零的、與零有關的或成為零的

Having no measurable or otherwise determinable value.
無價值的：沒有重大的或其它可肯定的價值的
Informal Absent, inoperative, or irrelevant in specified circumstances:
【非正式用語】 不存在的：在特定環(huán)境中不存在的、無效的、無意義的：
例句：
.The town has . . . practically no opportunities for amusement, zero culture.(Robert M. Adams)
.這座城市幾乎沒有機會娛樂，也沒有文化.(羅伯特M.亞當斯)

Meteorology
【氣象學】
Designating a ceiling not more than ' meters (52 feet) high.
零度云高的：指云高不超過'米(52英尺）
Limited in horizontal visibility to no more than 55 meters (80 feet).
零視度的：水平能見度在55米(80英尺）以內的
v.tr.（及物動詞）
ze.roed,ze.ro.ing,ze.roes
To adjust (an instrument or a device) to zero value.
把…調到零點：調整（儀器或設備）到零點

<常用詞組>zero in
To aim or concentrate firepower on an exact target location.
把…瞄準目標：瞄準或集中火力在正確的目標上
To adjust the aim or sight of by repeated firings.
調整歸零：通過重復射擊調整目標或視角
To converge intently; close in:
專心注意，迫近：
例句：
The children zeroed in on the display of toys in the store window.
孩子們的注意力都集中在商店櫥窗里陳列的玩具上

來源：
Italian
意大利語
from alteration of Medieval Latin zephirum
源自 中世紀拉丁語 zephirum的變化
from Arabic ìifr [nothing, cipher]
源自 阿拉伯語 ìifr [沒有，零]