一、英譯中時倍數減少如何翻譯

1、“減少了N–1/N"

2、“減少(shao)到1/N”或“是（原(yuan)來）的1/N”

英語中(zhong)表示倍數減(jian)小的句型可歸納為以下幾種。

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（一）decrease+by+N times

decrease+N times

decrease+by+a factor of+N

（decrease為(wei)表承減少意義(yi)的動詞，下同）

這三(san)個句(ju)型表示的意義一樣，均(jun)應譯為“減(jian)少(shao)了N–1/N”或(huo)“減(jian)少(shao)到1/N”。例如：

1)Since the introduction of the new technique the switching time of the transistor has been shortened three times.

采用(yong)這項新工(gong)藝(yi)后，晶體管的(de)開關時(shi)間(jian)縮短了三(san)分之二。

2)When the voltage is stepped up by 10 times,the strength of the current is stepped-down by 10 times，so that the power remains the same.

當電壓升(sheng)高到(dao)10倍時，電流強度降低到(dao)1/10，因此功率保持不變。

3)The water level in winter falls by a factor of three as against the average level.

冬季，水位(wei)比平均水位(wei)下(xia)降三分之二。

4)When the signal has increased by 10 times the gain may have been reduced by 8 times.

如果信號增(zeng)大9倍(bei)，增(zeng)益就可能降(jiang)低7/8。

5)The automatic assembly line can shorten ten times the assembling period.

自動裝配(pei)線可把裝配(pei)工(gong)期縮短(duan)到原來的1/10。

（二）N times+弱(ruo)比較級+（than）

N times+as+表示差、少意(yi)義的形容(rong)詞原級+as

這兩個句型的意義一樣，可譯為(wei)“比……N-1/N”或“是…1/N”。例如(ru)：

6)The plastic casing is three times lighter than the steel one.

這種塑料(liao)殼(ke)比(bi)鋼殼(ke)輕三分之(zhi)二(er)（或：這種塑料(liao)殼(ke)的(de)重量是鋼殼(ke)的(de)三分之(zhi)一）。

二、英語倍數翻譯常見錯誤

1、A是B的N倍大/長…(或者A比B大/長…N-1倍)

一(yi)般有以下(xia)兩種英語表達(da)方法(fa)：

(1)A is N times as large/long(形(xing)容(rong)詞/副詞原形(xing))as B.Eg:Asia is four times as large as Europe.

(2)A is N times larger/longer(形(xing)容詞/副詞比較級)than B.Eg:Asia is four times larger than Europe.

(3)A is N times the size/length(形(xing)容(rong)詞(ci)/副詞(ci)的(de)名詞(ci)形(xing)式)of B.Eg:Asia is four times the size of Europe.

以上三句(ju)例句(ju)的(de)(de)中文翻譯均為：亞洲是歐(ou)洲的(de)(de)四倍大(da)，或者亞洲比歐(ou)洲大(da)三倍。

2、by和to

(1)動(dong)詞+by+倍數/百分(fen)數/數詞

Eg:The production of grain has been increased by four times this year.

今年(nian)糧食(shi)產量增(zeng)加了四倍(bei)。

(2)動(dong)詞(ci)+to+數詞(ci)

Eg:Last year profits rose to$201 million.

去年(nian)利潤增長到2億零100萬美元。

3、by a factor of

詞組by a factor of在《朗(lang)文雙解》中的解釋為"if something increases or decreases by a factor of N,it increases or decreases by N times."以N倍的系數(shu)增加或減少。