certain
1. be certain of : 確信, 對...有把握；
2. for certain : 肯定地；
1. be certain of : 確信, 對...有把握；
2. for certain : 肯定地；
形容詞
1. He is certain to come.
他一定會來的。
2. The evidence is certain and the facts are clear.
證據(jù)確鑿，事實清楚。
3. I was certain that he had seen me.
我肯定他已看見了我。
4. A certain person called on you yesterday.
昨天有個人來拜訪過你。
5. It is certain that two and two makes four.
二加二等于四是確定無疑的。
了解海關(guān)手續(xù)
A：You've traveled abroad a lot, Jim, so would you like to tell me something about clearing customs.
吉姆，你經(jīng)常出國旅游，能向我介紹一下關(guān)于通關(guān)的情況嗎？
B：When you arrive in a country, you clear customs. A lot of countries have two channels: the green channel and the red channel. Some countries, like India, have three channels: the white channel, the green channel and the red channel.
到達一個國家時要通關(guān)。許多國家的海關(guān)有兩種通道：綠色通道和紅色通道。還有些國家如印度有三種通道：白色通道、綠色通道和紅色通道。
A：Then what are the differences between the green channel and red channel?
那么綠色通道和紅色通道之間有什么區(qū)別呢？
B：If you have more than the duty-free allowances or prohibited goods, you go through the red channel and declare them to a customs officer. If you otherwise have nothing to declare, you go straight through the green channel unless you are asked to stop by an officer. 如果你攜帶的東西超出免稅的范圍或?qū)儆诮麕锲罚?br /> 就得從紅色通道通過并向海關(guān)官員申報物品。如果你沒有需要申報的物品而海關(guān)官員又沒有阻攔你，你就可以直接通過綠色通道了。
A：I see.I'm told that we'll have to state the purpose of going to a certain country, is it true?
我明白了。我聽說去一個國家時需要陳述旅行的目的，是嗎？
B：That's right. People go aboard for different purposes: some for pleasure, some on vacation, some on business, and some for other purposes.
是的。人們出國都各有目的：有的為了消遣，有的出去度假，有的是因公出差，有的是為了其他目的。
A：I'm going to New Zealand for sightseeing. What should I say if they ask about my purpose?
我要去新西蘭觀光，如果他們問我旅行的目的我該怎么說呢？
B：Just saying "sightseeing" is OK.
說"觀光"就行了。
1. 肯定：股票市場最難搵到投資對象日子,就系大家對前景好肯定(certain)之時;反之,機會處處往往系股市進入不穩(wěn)定期(uncertain times). 今年1月人人話內(nèi)地A股出現(xiàn)泡沫,就系另一投資內(nèi)地股票時機,反而依家人人改變睇法,認同唔系泡沫,便要小心D.
2. 確定：中國證監(jiān)會前副主席史美倫就曾經(jīng)指出,上市公司質(zhì)量問題、高管人員圈錢、大股東占用公司資金等等行為是很嚴重的問題,證監(jiān)會現(xiàn)在很重視這個問題. 對于這些行為的執(zhí)法也非常重要,因為監(jiān)管的含義就是制定法律和執(zhí)行法律,為市場提供比較清楚(clear)確定(certain)的法律,而不能朝令夕改.
肯定（BEING SURE）
1. 肯定的;有把握的;毫無疑問的
If you are certain about something, you firmly believe it is true and have no doubt about it. If you are not certain about something, you do not have definite knowledge about it.
e.g. She's absolutely certain she's going to make it in the world...
她堅信自己會出人頭地。
e.g. We are not certain whether the appendix had already burst or not...
我們不敢肯定闌尾是否已經(jīng)破裂。
2. 必然的;必定的;肯定的
If you say that something is certain to happen, you mean that it will definitely happen.
e.g. However, the scheme is certain to meet opposition from fishermen's leaders...
然而，這項計劃一定會遭到漁民領(lǐng)袖的反對。
e.g. It's not certain they'll accept the Front's candidate if he wins...
即便來自陣線的候選人獲勝，他們能否接受他還說不準。
3. 確鑿的；無疑的
If you say that something is certain, you firmly believe that it is true, or have definite knowledge about it.
e.g. One thing is certain, both have the utmost respect for each other...
有一點可以肯定，那就是雙方都非常尊重對方。
e.g. It is certain that Rodney arrived the previous day.
羅德尼肯定是頭天到的。
4. 確實的;肯定的
If you have certain knowledge, you know that a particular thing is true.
e.g. He had been there four times to my certain knowledge.
我確定他去過那兒4次。
5. 確切地;無疑地
If you know something for certain, you have no doubt at all about it.
certain的反義詞
e.g. She couldn't know what time he'd go, or even for certain that he'd go at all...
她不知道他何時走，就連他到底走不走都說不準。
e.g. Hill had to find out for certain.
希爾得弄個清楚。
6. 確保；保證
If you make certain that something is the way you want or expect it to be, you take action to ensure that it is.
e.g. Firstly, they must make certain that their pension needs are adequately catered for...
首先，他們得確保他們能獲得足夠的養(yǎng)老金。
e.g. To make extra certain, a police helicopter kept watch from the skies.
為確保萬無一失，一架警用直升機一直在空中警戒。
表示數(shù)量（REFERRING AND INDICATING AMOUNT）
1. 某個;特定的
You use certain to indicate that you are referring to one particular thing, person, or group, although you are not saying exactly which it is.
e.g. There will be certain people who'll say 'I told you so!'...
一定有人會說：“我怎么跟你說來著！”
e.g. You owe a certain person a sum of money...
你欠某人一筆錢。
2. 某些;一些
When you refer to certain of a group of people or things, you are referring to some particular members of that group.
certain的解釋
e.g. They'll have to give up completely on certain of their studies.
他們將不得不徹底放棄某些研究。
3. (用于人名前，表示不認識或了解很少)某個
You can use a certain before the name of a person in order to indicate that you do not know the person or anything else about them.
e.g. She managed to arrange for them to be hidden in the house of a certain Father Boduen.
她設(shè)法安排他們藏在一個叫博迪恩的神父家里。
4. (品質(zhì)、特點等)一定程度上的，有點兒
You use a certain to indicate that something such as a quality or condition exists, and often to suggest that it is not great in amount or degree.
e.g. That was the very reason why he felt a certain bitterness...
那就是為什么他感到有些痛苦。
e.g. There is a certain impatience among some of the soldiers...
有些士兵有點兒不耐煩。