Waveguide slot antenna is firm, but the cost is too high. The microstrip antenna is light, its cost is low and it is simple to fabricate, so it is a prior consideration at much time.
波导缝隙天线比较结实，但是成本太高，微带天线则重量轻、成本低、易于制造，因此很多时候优先考虑。
In 2001, the younger Lei found a job in Shanghai and began to read books related to ancient poems at bookstores or libraries in his spare time, since he didn't make much money.
2001年，小雷在上海找到了一份工作，由于收入不高，他开始利用业余时间在书店或图书馆阅读古诗的相关书籍。
It's hard to recommend how to invest at this time without knowing how much capital you have.
在这个时候，如果你不知道自己有多少资本，就很难向别人推荐如何投资。
Follow the suggestions offered above, and you will look and feel much better in no time at all!
遵循以上建议，你很快就会感觉好多了。
Why protect chlorophyll at a time when the tree is breaking it down to salvage as much of it as possible?
在树木将叶绿素分解，以尽可能多地将其回收的时候，为什么我们还要保护叶绿素呢？
The Permian event has attracted much less attention than other mass extinctions because mostly unfamiliar species perished at that time.
二叠纪大灭绝事件比其他大灭绝事件受到的关注要少得多，因为那时灭绝的大多是我们不熟悉的物种。
While it probably wasn't apparent at the time, much of this work is permeated by a spirit of romantic escapism that the likes of Wordsworth would have readily understood.
虽然这在当时可能还不明显，但这部作品中充满了浪漫主义逃避现实的精神，这是华兹华斯等人很容易理解的。
It's a very important explanation and much debated, that at a critical time in the battle, one technique would be that one side would give one great big shove.
它是一种很重要的解释，而且饱受争议，那就是在战局一个重要的时刻，有一项技术就是一方给对方致命一推。
In the future, how much time will you spend in movie theaters, at amusement parks, at shopping malls, or at convenience stores?
在未来，你会花多少时间在电影院、游乐园、购物中心或便利店？
They are alert at bedtime and sleepy when it is time to get up, and this may have nothing to do with how fatigued their bodies are, or how much sleep they must take to lose their fatigue.
他们在睡觉的时候很清醒，到了该起床的时候很困倦，这可能与他们的身体有多疲劳，或者需要多少睡眠才能消除疲劳无关。
Perhaps parents can stop worrying so much about screen time, at least for older boys and girls.
也许父母们可以不再那么担心屏幕使用时间，至少对年龄较大的男孩和女孩来说是这样。
At the same time, both cattle and humans were more confined in their movements, staying much closer to permanent water supplies for long periods of time.
同时，牲畜和人类的行动范围都受到了更大的限制，在很长一段时间内都要待在离永久水源更近的地方。
一次不要吃太多。
You'll be surprised at how much time you'll have to do what you really want to do.
你会惊讶于有多少时间来做你真正想做的事情。
At that time Lindsay wanted very much to work at Fun Kids, a radio station for young listeners, so she sent them a strange recording, hoping to be accepted.
当时琳赛非常想在 Fun Kids 工作，那是一家面向年轻听众的广播电台，所以她给他们发了一份奇怪的录音，希望能被录用。
If you decide that you need to read the whole book, decide how much you can read at a time.
如果你决定需要阅读整本书，决定一下你一次能读多少内容。
At first, everything was perfect: I had so much work that I had to take on an assistant, my best friend at work, Don, just to be able to finish things on time.
起初，一切都很完美：我有太多的工作要做，所以不得不请我在工作上最好的朋友唐作为助手，只是为了能按时完成工作。
Many people spend so much time at work that when it becomes dissatisfying, the rest of their life soon follows.
人们每天花在工作的时间太多了，所以一旦工作变得不令人满意，生活质量也随之变差。
When you calculate these new Numbers, you might be shocked both at how much time you actually spend working in an average week, as well as how little you actually earn.
当你计算这些新的数字时，你可能会吃惊于实际上平均每周花在工作上的时间是如此之多，而你赚的却如此之少。
And if you include regular maintenance in your schedule, they really don't take up much time at all.
如果你在计划中列入了日常维护，它们真的不会用很多时间。
Economic activity in those countries is still much weaker than at the same time last year.
那些国家的经济活动与去年同期相比仍然非常策弱。
In other words, the problems with school weren't just caused by the fact that gamers spent so much time at the console.
换言之，学校的问题并不仅仅是孩子们长时间玩游戏所引起的。
FloatingDock also lets the application change the region at any time, much like dragging the Windows Taskbar to a new location on the screen.
FloatingDock还允许应用程序在任何时候改变区域，非常像把Windows的任务栏拖到屏幕上的新位置。
The sun does not deliver that much energy to any one place at any one time. How much solar energy a place receives depends
太阳不会向任一地点，任意时刻都输送那么多的能量，一地能获得多少的太阳能基于多种因素，包括时间、季节、纬度以及天气条件。
"But you, Jon," he said, "learned so much at one time that you didn't have to go through a thousand lives to reach this one."
“可是你，乔，”他说，“一下子就学了这么多，你用不着经历千世就到达了这个世界。”
“But you, Jon,” he said, “learned so much at one time that you didn’t have to go through a thousand lives to reach this one.”
“可是你，乔，”他说，“一下子就学了这么多，你用不着经历千世就到达了这个世界。”
But I'm guessing that it was all much less funny for you at the time.
但我猜对你设身处地的那个时代不见得有多大的趣味。
But I'm guessing that it was all much less funny for you at the time.
但我猜对你设身处地的那个时代不见得有多大的趣味。
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