1
- not any无, 没有：
there is no excuse
毫无借口
no two plants are alike.
没有两株植物是一样的。
2
- used to indicate that something is quite the opposite of what is being specified用于表示与某特定事物相反并不, 绝非：
it was no easy task persuading her
说服她绝非易事
Toby is no fool.
托比并不傻。
3
- hardly any几乎没有：
you'll be back in no time.
你马上回来。
4
- used in notices or slogans forbidding or rejecting something specified用于通知或标语禁止; 反对：
No Smoking signs
“禁止吸烟”的标志
no nukes.
禁止核武器。
1
- used to give a negative response用于否定回答不：
'Is anything wrong?' 'No.'
“有什么毛病吗？”“没有。”
1.1
- expressing disagreement or contradiction［表示异议或反驳］不：
'This is boring.' 'No, it's not!'
“这很无聊。”“不, 不无聊！”
1.2
- expressing agreement with or affirmation of a negative statement表示对否定陈述的赞同, 肯定不, 不会：
they would never cause a fuss, oh no.
他们永远不会引起忙乱, 绝对不会。
1.3
- expressing shock or disappointment at something one has heard or discovered表示对所听到或发现的事物的吃惊或失望不会吧, 天啊：
oh no, look at this!
哦, 不会吧, 看看这个！
1
- with comparative not at all; to no extent完全不; 决不：
they were no more able to perform the task than I was.
他们和我一样无法完成这项任务。
2
- Scottish not〈苏格兰〉不：
I'll no be a minute.
我要不了一分钟就好。
短语
no can do
- informal 〈非正式〉I am unable to do it我干不了。
the noes have it
- the negative votes are in the majority否定票占大多数。
no less
- 见LESS.
no longer
- not now as formerly不再：
they no longer live here.
他们不再住在这儿了。
no man
- no person; no one没有人。
no more
- 见MORE.
no place
- N. Amer. nowhere〈北美〉无处。
no sooner - than
- 见SOON.
no through road
- an indication that passage along a street is blocked or prohibited道路堵塞; 禁止通行。
not take no for an answer
- persist in spite of refusals非取得同意不可; 坚持己见。
no two ways about it
- used to convey that there can be no doubt about something毫无疑问。
no way
- informal 〈非正式〉under no circumstances; not at all绝不可能：
You think she's alone? No way.
你以为只有她一个人吗？绝不可能。
no worries
- informal, chiefly Austral. all right; fine〈非正式, 主澳〉好, 行; 太好了。
or no
- or not或不是：
she'd have ridden there, winter or no.
不管是不是冬天, 她都会乘车去那儿的。
- or no -
- regardless of the specified thing不管是不是：
recession or no recession there is always going to be a shortage of good people.
不管经济景不景气, 好人总是太少。
词源
Old English nō, nā (adverb), from ne 'not' + ō, ā 'ever'. The determiner arose in Middle English （originally before words beginning with any consonant except h-）, reduced from non, from Old English nān （see NONE1）.