keep an eye on sb/sth
此处只用单数 eye，不能说 keep eyes on。
Could you keep an eye on my bag while I buy a ticket?
我去买票的时候你能帮我看着包吗？
眼睛
eyes — plural of eye
视力；视觉；注意；关注；眼神；目光；眼力；洞察力；虹膜；眼睛的颜色
The organ of sight; the part of the body that animals use to see.
动物通过光感知周围环境的器官。
An organ through which animals see (“perceive surroundings via light”).
拉丁字母I/i的名称
The name of the Latin script letter I/i.
一窝
A brood.
视觉器官
the organ of sight
视觉。
The visual sense.
良好的辨别力(视觉或类似视觉的)
good discernment (either visually or as if visually)
虹膜,特指具有某种颜色。
The iris of the eye, being of a specified colour.
对所见事物的关注
attention to what is seen
注意,关注。
Attention, notice.
察觉他人可能忽略之物的能力。
The ability to notice what others might miss.
意味深长的眼神或注视。
A meaningful look or stare.
针钝端供线穿过的孔。
A hole at the blunt end of a needle through which thread is passed.
斧头上供斧柄穿过的椭圆形孔。
The oval hole of an axehead through which the axehandle is fitted.
由金属或其他材料制成的环状配件,用于容纳钩子或穿过绳索。
A fitting consisting of a loop of metal or other material, suitable for receiving a hook or the passage of a cord or line.
构成物体一部分的环或孔,用于容纳钩、销、绳、杆等；例如桥桁架系杆端部、曲柄、绳端或磨石上的孔。
A loop forming part of anything, or a hole through anything, to receive a hook, pin, rope, shaft, etc.; for example, at the end of a tie bar in a bridge truss, through a crank, at the end of a rope, or through a millstone.
某事物的中心或焦点部分。
A central and focal portion of any of several things.
动物身上类似人眼的花纹,如蝴蝶或孔雀。
A mark on an animal, such as a butterfly or peacock, resembling a human eye.
马铃薯上的繁殖芽。
A reproductive bud in a potato.
在相对美感或重要性上类似眼睛之物。
That which resembles the eye in relative beauty or importance.
色调；色彩
A shade of colour; a tinge.
某些奶酪中的孔
One of the holes in certain kinds of cheese.
船首的最前部；锚链孔
The foremost part of a ship's bows; the hawseholes.
小写字母e的封闭空间
The enclosed counter (“negative space”) of the lower-case letter e.
被一方棋子围住的空点或空点组
An empty point or group of points surrounded by one player's stones.
坑眼的同义词
Synonym of pit-eye.
She has blue eyes.
她有一双蓝眼睛。
用法提示：eye 在这里作为名词，指视觉器官。
AI contextual example
He has an eye for detail.
他对细节有敏锐的辨别力。
用法提示：eye 在这里作为名词，指良好的辨别力。
AI contextual example
The painting caught my eye.
这幅画引起了我的注意。
用法提示：eye 在这里作为名词，指关注。
AI contextual example
此处只用单数 eye，不能说 keep eyes on。
Could you keep an eye on my bag while I buy a ticket?
我去买票的时候你能帮我看着包吗？
也可说 catch the eye of sb，意思相同。
A bright red dress in the window caught her eye.
橱窗里一条鲜红的连衣裙吸引了她的注意。
eye 前常加 good、keen 等形容词。
She has a good eye for colour.
她对色彩很有鉴赏力。
也可说 look sb in the eyes，多用于否定句或疑问句。
He was too ashamed to look me in the eye.
他羞愧得不敢直视我。
grammar · medium
易错句子She has big eye.
正确表达She has big eyes.
英语中成对的器官（眼睛、耳朵、手等）习惯用复数，汉语说“大眼睛”不带复数标记，但英语必须说 big eyes；单数 eye 只指一只眼睛，会让人以为她只有一只眼。
grammar · medium
易错句子My eye is not good, so I wear glasses.
正确表达My eyesight is not good, so I wear glasses.
汉语“眼睛不好”说的是视力，英语里视力用不可数名词 eyesight；eye 只指眼球这个器官，说 My eye is not good 会被理解为某一只眼睛本身有毛病。
grammar · medium
易错句子Please keep an eye to my bag.
正确表达Please keep an eye on my bag.
keep an eye on 是固定搭配，介词只能用 on，意思是“照看、留意”；这个搭配中不能用 to。
针对‘注意力’含义
eye 指看得见的器官“眼睛”；sight 指看的能力“视力、视觉”，也可指看到的景象。说器官用 eye，说能力或景象用 sight。
eye 是日常说的“眼睛”，指整个视觉器官；eyeball 是解剖学用语，专指眼球这个球状体。医学、解剖语境用 eyeball，日常表达用 eye。
eye 与 aye 读音相同 /aɪ/，但意思完全不同：eye 是“眼睛”，aye 是投票时的“赞成（票）”，多用于正式会议表决。听写时注意拼写。
进行眼神交流
He found it difficult to make eye contact with the audience.
他发现自己很难与观众进行眼神交流。
留意，照看
Can you keep an eye on my bag while I go to the restroom?
我去洗手间时你能帮我照看包吗？
看法一致
They don't see eye to eye on political issues.
他们在政治问题上看法不一致。
视而不见
The manager turned a blind eye to the minor rule violations.
经理对小的违规行为视而不见。
公众瞩目下
Celebrities are constantly in the public eye.
名人总是处于公众瞩目之下。
引起某人注意
A bright red dress caught her eye in the shop window.
橱窗里一条鲜红色的裙子引起了她的注意。
留意；照看
Can you keep an eye on my bag while I go to the restroom?
我去洗手间时，你能帮我照看一下包吗？
看法一致；达成共识
They don't see eye to eye on the new policy.
他们在这项新政策上看法不一致。
引起某人注意
The bright red dress caught her eye in the store window.
橱窗里那条鲜红色的连衣裙引起了她的注意。
这是老虎之眼，这是战斗的刺激
She has the eye of the tiger when competing.
她在比赛时有老虎之眼般的锐气。
美在观者的眼中。
Some people find modern art beautiful, but beauty is in the eye of the beholder.
有些人觉得现代艺术很美，但美在观者的眼中。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.