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He noticed at once that discipline was slack: the Danes had the self-confidence of conquerors, and their security precautions were casual.

他馬上發現丹麥軍紀律松弛，他們以征服者自居，安全措施馬馬虎虎。

One is the general atmosphere of secrecy in which it is carried out,

一是科研工作中普遍存在的保密氣氛；

Some years ago an American psychiatrist named William Dement published experiments dealing with the recording of eye-movements during sleep.

前些年，美國一位精神病學者發表了一篇報告，報告中記錄了眼球在睡眠時的活動情況。

it can become a 'flying fruit-bowl', carrying bananas from the plantations to the ports;

它能成為飛行水果盤子，把香蕉從種植園運到港口。

This may sound fantastic, but it is easily calculated.

這點聽起來令人難以置信，但卻很容易計算出來。

a ticklish business which is achieved with the aid of two tame elephants roped to the captive on either side.

這是一件棘手的事，需要在它兩側拴上兩頭馴服的大象才能完成。