不时地

Now and then he saw men walking along the street. Then they disappeared in the dim shadows. They must be plain-clothes men, Bob decided, who would hide until the time was ripe to swoop down on the criminals.

他不时地看见有人在街上走着，然后就消失在昏暗的黑影中，鲍勃肯定这些都是便衣警察，他们先躲起来，时机一到就会冲向犯罪分子，将他们一网打尽。

That officer holds a pen who records frequently landing and taking-off times of helicopter .

那个军官手里握着笔，不时地记录着直升机降落和起飞的次数。

I was endlessly amazed by her energy, her competency, and her unflappable, easy manner with my daughters.

母亲的精力、能力和照顾女儿时从容不迫、简单易行的方式，不时地让我感到惊讶。

She leaned back far to look up where the fireworks were and she caught her knee in her hands so as not to fall back looking up and there was no-one to see only him and her when she revealed all her graceful beautifully shaped legs like that, supply soft and delicately rounded, and she seemed to hear the panting of his heart, his hoarse breathing, because she knew too about the passion of men like that, hotblooded, because Bertha Supple told her once in dead secret and made her swear she'd never about the gentleman lodger that was staying with them out of the Congested Districts Board that had pictures cut out of papers of those skirtdancers and highkickers and she said he used to do something not very nice that you could imagine sometimes in the bed.

除了他和她而外，没有一个人在看着，所以她把她那双俊秀而形态优美、娇嫩柔韧而细溜丰腴的小腿整个儿裸露出来。她似乎听到他那颗心的悸跳，粗声粗气的喘息，因为她也晓得像他那样血气方刚的男人，会有着怎样的情欲。还因为一次伯莎。萨波尔告诉过她一桩绝对的秘密，并要她发誓永远不说出去。她家的一位在人口密集地区调查局工作的房客，从报纸上剪下那些表演短裙舞和翘腿舞的舞女的照片。她说，他不时地在床上做些不大文雅的勾当，这，你也想象得到吧。

And when I perform the poems the sonic shapes are all important, but I want that shape to stretch, bend, snap, break down into a virtually acoustic vocable noise, lapse into song by day, lullaby by night, interrupted by the whirring and wailing of the fire engines I hear outside my window.

当我朗诵诗歌的时候，声音的造型最为重要，但是我希望这种造型通过拉伸、弯曲、猛折、分解而变成事实上没有意义的噪音，成为白天的歌晚上的催眠曲，不时地被窗外救火车的呼啸声和哀叫声打断。

In this journey, the understanding is the 'voiture' that must carry you through; and in proportion as that is stronger or weaker, more or less in repair, your journey will be better or worse; though at best you will now and then find some bad roads, and some bad inns.

在这旅途，理解是你乘坐的车辆，它的牢固与否以及修理的情况决定了你的旅程的好坏。哪怕在最好的情况下，你也会不时地遇到崎岖之路、残破的旅店。

It was in a way akin to that common habit of men and women troubled by real or fancied grievances, who periodically and volubly break their long-suffering silence and "have their say" till the last word is said.

那在一定程度上跟普通男女在受到真正的、或是想当然的委屈时候的习惯差不多，他们总要不时地打破长期的沉默，大发牢骚，"畅所欲言"，直到吐尽了苦水为止。

I know that we have problems. I know that many disagree with our Government's policies. Many in Israel, too, disagree from time to time with the Government's policies, and are free to do so, because Zionism has created the first and only real democratic State in a part of the world that never really knew democracy and freedom of speech.

我知道我们有很多问题，我知道有很多人反对我们政府的政策，在以色列，同样有很多人不时地会反对政府的政策，他们有这样的自由，因为锡安主义在这片从没有真正实现过民主和言论自由的土地上，第一次创造了一个、真正民主的国家。

For this reason, corporations rethink fundamentally of the management and draw two conclusions: one is that the Adam Smiths theory of labor division should be criticized, the other is the adoption of TQM, The book written by Michael Hammer and James Champy is the milestone in the movement.

企业再造的核心思想是要求经营者不时地审视自己企业的活动过程，把低效活动排挤出去，使之更有效，以便不妨碍向顾客提供价值。

Angel Clare, who communistically stuck to his rule of taking part with the rest in everything, glanced up now and then.

安琪尔·克莱尔决心遵守一条原则，什么事都和大家一起干，他不时地抬起头来看。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。