Now and again a strange bird flew past, otherwise there was no sign of life . 天上时而飞过一种怪鸟，除此之外就没有任何生命的痕迹了。
This individual at times surveyed them from afar with an amused and superior grin . 此人时而咧着嘴带着觉得好玩而又高傲的神情从远处打量着他们。
The guards occasionally improved their rather sparse rations by the addition of a little venison . 这些卫兵时而要弄点鹿肉来改善一下那低劣的伙食。
During the next nine years he alternated between service in several armies and carousing in paris . 在那以后的九年里，他时而在几个军队中服役，时而在巴黎狂欢作乐。
It was a crunching of heavy feet, punctuated now and again by the clattering of a displaced stone . 那是沉重的脚步发出的嘎吱嘎吱声响，时而夹杂着石头被踢开后滚落的声音。
As the vectors go around, the amplitude of the sum vector gets bigger, and smaller, and the intensity pulsates . 在矢量旋转时，合矢量的振幅时而变大，时而变小，因而强度作脉动变化。
About a hundred yards away on a small sand spit there was the occasional sharp in effectual pop of a carbine . 从百来码以外一个伸出在海水中的小小的沙滩角上，时而传来卡宾枪朝天砰的一响。
On other occasions he bullied them with skill in ways that did not make it exactly plain to them that they were being bullied . 他时而巧妙地欺侮他们一下，而不使他们明显地感觉到他们被欺侮了。
The visitors had been courteous and in some cases, helpful in pointing out mild errors all of which was part of their job . 来人很讲礼貌，时而还殷勤地把一些小误差给指出来，这些全是他们职责的一部分。
The pale moon dipped in and out of the strands of clouds so that juana walked in darkness for a moment and in light the next . 灰白的月亮在云层中时隐时现，使得胡安娜时而在黑暗中行走，时而在月光下前进。
