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certain

美 [ˈsɜrt(ə)n]
英 [ˈsɜː(r)t(ə)n]
  • adj.肯定;确定;确信;无疑
  • pron.(不提及人或事物的名称时用)某些
  • 网络确定的;肯定的;一定的
certain
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adj.
1.
确实;确定;肯定that you can rely on to happen or to be true
The climbers face certain death if the rescue today is unsuccessful.
救援行动如果今天不能成功,登山队员必死无疑。
It is certain that they will agree.
他们一定会同意。
She looks certain to win an Oscar.
看来奥斯卡金像奖非她莫属。
They are certain to agree.
他们一定会同意。
If you want to be certain of getting a ticket, book now.
要想有把握买到票,现在就得预订。
2.
确信;确定;无疑firmly believing sth; having no doubts
She wasn't certain (that) he had seen her.
她不敢肯定他见过她。
Are you absolutely certain about this?
你对这事绝对确信无疑吗?
I'm not certain who was there.
我无法确定谁当时在场。
To my certain knowledge he was somewhere else at the time(= I am sure about it) .
我敢肯定他当时不在现场。
3.
(不提及细节时用)某事,某人,某种used to mention a particular thing, person or group without giving any more details about it or them
For certain personal reasons I shall not be able to attend.
由于某种个人原因,我将不能出席。
Certain people might disagree with this.
某些人对这事可能不会赞同。
They refused to release their hostages unless certain conditions were met.
除非某些条件得到满足,否则他们不会释放人质。
4.
(与人名连用,表示说话者不识其人)某某,某位,一位叫…的used with a person's name to show that the speaker does not know the person
It was a certain Dr Davis who performed the operation.
是一位叫戴维斯的医生做的手术。
5.
轻微的;微小的;显而易见却难以描述的slight; noticeable, but difficult to describe
That's true, to a certain extent .
在一定程度上的确如此。
I felt there was a certain coldness in her manner.
我觉得她的态度有点冷淡。
IDM
I can't say for certain when we'll arrive.
我说不准我们什么时候能到。
for certain
肯定;确定;无疑without doubt
I can't say for certain when we'll arrive.
我说不准我们什么时候能到。
I think there's a bus at 8 but you'd better call to make certain.
好像 8 点有一班公共汽车,不过你最好打电话弄清楚。
make certain (that…)
弄确实;弄清楚;弄明白to find out whether sth is definitely true
I think there's a bus at 8 but you'd better call to make certain.
好像 8 点有一班公共汽车,不过你最好打电话弄清楚。
You'll have to leave soon to make certain of getting there on time.
你得快点出发,好确保准时到达那里。
make certain of sth/of doing sth
确保(做某事)to do sth in order to be sure that sth else will happen
You'll have to leave soon to make certain of getting there on time.
你得快点出发,好确保准时到达那里。
The show appeals to an audience of a certain age.
这个节目中年观众感兴趣。
of a certain age
不算年轻的;年纪不轻的;中年的if you talk about a person beingof a certain age , you mean that they are no longer young but not yet old
The show appeals to an audience of a certain age.
这个节目中年观众感兴趣。
pron.
1.
(不提及人或事物的名称时用)某些used for talking about some members of a group of people or things without giving their names
Certain of those present were unwilling to discuss the matter further.
某些在场的人不愿意进一步讨论这个问题。

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