一、英譯中時倍數減少如何翻譯

1、“減少(shao)了N–1/N"

2、“減(jian)少到(dao)1/N”或“是（原來）的1/N”

英(ying)語中表示倍數減小(xiao)的句型可歸(gui)納(na)為以下幾種。

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（一）decrease+by+N times

decrease+N times

decrease+by+a factor of+N

（decrease為表承減少意義的動(dong)詞，下(xia)同(tong)）

這三(san)個(ge)句(ju)型表示的意義一樣，均(jun)應譯(yi)為“減少了N–1/N”或“減少到1/N”。例如：

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

采(cai)用這項新(xin)工(gong)藝后，晶體管的(de)開關時間縮短了三分之二。

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(dian)壓升高到10倍時(shi)，電(dian)流強度降低到1/10，因此功(gong)率保持不(bu)變。

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

冬(dong)季，水(shui)位比平均水(shui)位下降三分之二。

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

如果信號增大9倍(bei)，增益就可能降(jiang)低7/8。

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

自動裝配線可把(ba)裝配工(gong)期(qi)縮短到原(yuan)來(lai)的1/10。

（二）N times+弱(ruo)比較級+（than）

N times+as+表示(shi)差(cha)、少意(yi)義的(de)形容詞原(yuan)級+as

這兩個(ge)句型的意義一樣，可譯為(wei)“比……N-1/N”或“是…1/N”。例(li)如：

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

這種塑料(liao)殼(ke)比鋼殼(ke)輕三分之二（或：這種塑料(liao)殼(ke)的重量是(shi)鋼殼(ke)的三分之一）。

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)

一般有以(yi)下兩種(zhong)英語(yu)表達方法：

(1)A is N times as large/long(形容詞/副(fu)詞原形)as B.Eg:Asia is four times as large as Europe.

(2)A is N times larger/longer(形容詞/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/副詞的名詞形(xing)式(shi))of B.Eg:Asia is four times the size of Europe.

以上三句例(li)句的中文翻(fan)譯均為：亞洲(zhou)是歐(ou)洲(zhou)的四倍大，或(huo)者亞洲(zhou)比歐(ou)洲(zhou)大三倍。

2、by和to

(1)動(dong)詞+by+倍數/百分數/數詞

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

今年糧食產量增加了四(si)倍。

(2)動(dong)詞+to+數詞

Eg:Last year profits rose to$201 million.

去年(nian)利(li)潤增(zeng)長到(dao)2億零100萬美元。

3、by a factor of

詞(ci)組by a factor of在(zai)《朗文雙(shuang)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倍的系數增加或減少(shao)。