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used to refer to a particular time in the past or future （指過去）當時，那時；（指將來）到那時，屆時 Life was harder then because neither of us had a job. 那時生活比較艱苦，因爲我倆都沒有工作。 Things were very different back then. 以前那個時候情況大不相同。 She grew up in Zimbabwe, or Rhodesia as it then was. 她在津巴布韋長大，當時該地叫羅得西亞。 I saw them at Christmas but haven't heard a thing since then. 我在聖誕節見到過他們，但之後沒聽到過什麽消息。 I've been invited too, so I'll see you then. 我也接到邀請，我們到那時見。 There's a room free in Bob's house next week but you can stay with us until then. 下星期鮑勃家會空出一個房間，不過在那之前你可以和我們住在一起。 Call again next week. They should have reached a decision by then. 下星期再來電話。到那時他們應該已作出決定了。 Just then (= at that moment) there was a knock at the door. 就在那時有人敲門了。 She left in 1984 and from then on he lived alone. 她於 1984 年離去，從那時起他便獨自一人生活。 I took one look at the car and offered to buy it there and then/then and there (= immediately). 我只看了那輛汽車一眼，就當即表示要買下來。 Her voice sounded raspy, and it was then that she realized how thirsty she was. 她的聲音聽起來刺耳，就在這時，她意識到自己有多渴。
used to introduce the next item in a series of actions, events, instructions, etc. 然後；接着；其後；後來 He drank a glass of whisky, then another and then another. 他喝了杯威士忌，接着又喝了一杯，然後又喝了一杯。 First cook the onions, then add the mushrooms. 先炒洋蔥，然後放進蘑菇。 We lived in France and then Italy before coming back to England. 我們在返回英格蘭之前，先住在法國，後來住在意大利。 I took a week's vacation, then went back to Ohio. 我休了一個星期的假，然後回了俄亥俄州。
Language Bank processprocessDescribing a process 描述過程 This diagram illustrates the process of paper-making./This diagram shows how paper is made. 這個圖說明了造紙的過程。
First/First of all, logs are delivered to a paper mill, where the bark is removed and the wood is cut into small chips. 首先，原木被運送到造紙廠，在那裏去掉樹皮，然後被切成木片。
Next/Second, the wood chips are pulped, either using chemicals or in a pulping machine. 接下來，用化學品或磨漿機把木片化成漿。
Pulping breaks down the internal structure of the wood and enables/allows the natural oils to be removed. 制漿過程使木材的内部結構分解，從而去除木材裏的天然油。
Once/After the wood has been pulped, the pulp is bleached in order to remove impurities. /…is bleached so that impurities can be removed. 木材制成漿後，將其漂白以去除雜質。
The next stage is to feed the pulp into the paper machine, where it is mixed with water and then poured onto a wire conveyor belt. 下一步便是將紙漿送入制紙機，與水混合後再倒入金屬傳送帶。
As the pulp travels along the conveyor belt, the water drains away. This causes the solid material to sink to the bottom, forming a layer of paper. 當紙漿沿傳送帶傳送時，水分蒸發，使得固體物質沉到底部，形成一層紙。
At this point the new paper is still wet, so it is passed between large heated rollers, which press out the remaining water and simultaneously dry the paper/…dry the paper at the same time. 這時，新出的紙仍然是濕的，故讓其經過幾個巨大的熱滾筒，擠壓脫水並同時烘幹。
The final stage is to wind the paper onto large rolls./Finally, the paper is wound onto large rolls. 最後一步是將紙卷在巨大的卷軸上。
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used to show the logical result of a particular statement or situation 那麽；因此；既然如此 If you miss that train then you'll have to get a taxi. 如果你錯過那趟火車，那就得坐出租汽車。 ‘My wife's got a job in Glasgow.’ ‘I take it you'll be moving, then.’ “我妻子在格拉斯哥找了份工作。” “既然如此，我想你要搬家了。” ‘You haven't done anything to upset me.’ ‘So what's wrong, then?’ “你沒有做使我煩心的事。” “那你是怎麽啦？” Why don't you hire a car? Then you'll be able to visit more of the area. 你怎麽不租輛汽車？那樣的話，你可以多參觀些地方。
used to introduce additional information 另外；還有；再者；而且 - (formal)
used to introduce a summary of something that has just been said 總之 used to show the beginning or end of a conversation, statement, etc. （表示交談、陳述等的開始或結束）那麽
Word OriginOld English thænne, thanne, thonne, of Germanic origin; related to Dutch dan and German dann, also to that and the.
Idioms
…and then some
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used to emphasize the large amount or number of something, and to say that you have not mentioned everything 而且還要多；而且遠不只這些 There are Indian, Chinese, Mexican, Thai restaurants… and then some! 有印度、中國、墨西哥、泰國餐館…，而且還有很多其他國家的餐館！
but then | then again | but then again
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used to introduce additional information or information that contrasts with something that has just been said （引出另外情況或相對照的情況）不過，可是話又說回來了
(every) now and again/then
from time to time; occasionally 有時；偶爾；時常
(every) now and then/again
from time to time; occasionally 有時；偶爾；時常 Every now and then she checked to see if he was still asleep. 她不時地查看他是否還在睡覺。
now then
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used to show in a mild way that you do not approve of something （表示交談、陳述等的開始或結束）那麽 used when making a suggestion or an offer （提出建議或提供幫助）喂，聽我說