(pl. -os)
1- no quantity or number; nought; the figure零, 零数, 0:
figures from zero to nine
从0到9的数字
you've left off a zero-it should be five hundred million.
你漏掉了一个0——应该是5亿。
1.1
- a point on a scale or instrument from which a positive or negative quantity is reckoned（刻度表上的）零点, 零位：
the gauge dropped to zero
测量表（的读数）跌到了0
as modifier a zero rate of interest.零利率。
1.2
- the temperature corresponding to 0° on the Celsius scale (32° Fahrenheit), marking the freezing point of water（气温）摄氏零度（华氏32度）：
the temperature was below zero.
气温在摄氏零度以下。
1.3
- usu. as modifier Linguistics the absence of an actual word or morpheme to realize a syntactic or morphological phenomenon【语】零形态; 无屈折：
the zero plural in 'three sheep'.
'three sheep'中sheep的复数无屈折变化。
1.4
- the lowest possible amount or level; nothing at all最低数量; 最低水准; 没有, 全无：
I rated my chances as zero.
我估计我的机会为零。
1.6
- informal a worthless or contemptibly undistinguished person〈非正式〉渺小的人; 无用的人; 无足轻重的人：
her husband is an absolute zero.
她的丈夫绝对是个小人物。
(-oes, -oed)with obj.
1
- adjust (an instrument) to zero把…调到零点（或零位）：
zero the counter when the tape has rewound.
倒完带就把计数器归零。
2
- set the sights of (a gun) for firing校正（枪、炮等）。
词源
early 17th cent.: from French zéro or Italian zero, via Old Spanish from Arabic ṣifr 'cipher'.
短语动词
zero in
1
- take aim with a gun or missile把（枪、炮、导弹）对准目标, 瞄准：
jet fighters zeroed in on the rebels' positions.
喷气战斗机将火力集中对准叛军阵地。
1.1
- focus one's attention集中注意力：
they zeroed in on the clues he gave away about.
他们把注意力集中在他所泄露的线索上。