Finding an effective approach to carry drugs, keeping off BBB and taking drugs to NCS directly puzzled neurologists all long time.
寻找有效的给药途径，避开血脑屏障的阻断，将药物直接运送到中枢神经系统一直是神经科学家面临的挑战。
We give people a few months to write their story and then it takes quite a long time to judge all the entries and to announce the winners.
我们给人们几个月的时间来写他们的故事，然后需要用相当长的时间来评判所有的参赛作品并宣布获胜者。
All this was compatible with older devices so long as there was only one authoritative timekeeper; but with urban growth and the multiplication of time signals, discrepancy brought discord and strife.
所有这些都与旧的设备兼容，只要只有一个权威的计时器；但随着城市的发展和时间信号的倍增，报时的差异导致了不和与冲突。
It must have taken you a long time to fix up all these bookshelves.
你一定花了很长时间才把所有的这些书架修好。
For a long time, we assumed that all whales that had teeth including sperm whales and killer whales were closely related to one another.
在很长一段时间里，我们认为所有有牙齿的鲸鱼，包括抹香鲸和虎鲸，彼此都是密切相关的。
Turtles went back to the sea a very long time ago and, like all vertebrate returnees to the water, they breathe air.
海龟很久以前就回到了海里，和所有返回水中的脊椎动物一样，它们呼吸着空气。
All summer long Heidi had not been up with him a single time; it was too much!
整个夏天海蒂一次也没跟他一起上山；太过分了！
I did break a bone in my foot playing football a long time ago but that's all healed up now.
我很久以前踢足球的时候确实摔断了脚上的一根骨头，不过现在已经完全好了。
He was unhappy when he sold his violin. After all, he had had it for a very long time.
卖掉小提琴时他很不高兴。毕竟，他拥有了这个小提琴好久。
All stir has ceased for some time, for every gallery has long ago been packed.
所有的骚动已经停止了一段时间，因为每一个看台都早已挤满了人。
People often talk of goldfish having three-second memories, but in fact they can learn all kinds of things, and remember them for quite a long time.
人们常说金鱼的记忆只有三秒钟，但实际上它们能学会各种各样的东西，而且能记住很长时间。
Be warned that downloading all of these platforms takes a long, long time.
要注意，下载所有这些平台需要花费很长时间。
Really. This data will be leveraged by all kinds of different web applications, for a long time.
这是确定的，未来很长一段时间内，各种网络应用程序将利用这些数据来大展拳脚。
PEOPLE OFTEN FORGET that for a long time all Korean brands were at the bottom of the branding "totem pole."
人们经常会忽略，在过去的长时间里，所有的韩国品牌都处于品牌“等级”的底层。
All of them had been homeless for a long time - on average, 17 years.
他们都都曾经有很长一段时间无家可归——平均达17年之久。
Climate is the overall combination of all these events over a long period of time.
气候，指的是在一个相对较长的时间内，所有这些事件的结合体。
There was a long quiet time. She stared out of the window, taking all this in.
她安静了很长一段时间，眼睛盯着窗外，消化吸收着这些信息。
Although I suffered from pain, itching and headaches all the time, the long hospital stay made me dream to become a doctor.
尽管疼痛、瘙痒和头疼时刻困扰着我，但长期的住院经历使我开始想成为一名医生。
Though I've found it difficult to maintain the precise system for long, I use elements of it all the time.
虽然我觉得要长期精确的坚持下去有些困难，但始终采用其中的一些原理。
Being disappointed is all about perspective. It took me a long time to realize this.
所有失望都来源于希望，这是我花了很长时间才明白的。
We all smiled. The Cold War seemed a long time ago.
我们都面带微笑，冷战似乎已经过去好久了。
Underlying all this, Siemens was badly managed for a long time.
比这些都重要的是，西门子管理不善已经很长时间了。
Trust me, these will keep you warm and toasty all winter long, and a long time in the wearing.
相信我，这双能让你整个冬天都暖和舒适，而且能穿很长时间。
People scan web pages, and probably won't take a long time to read all the text.
人们会快速浏览页面，但可能不会花很长时间阅读所有的文字。
A complete cache contains all the data but could take a long time to load initially.
完整缓存包含了所有的数据，但在首次加载的时候耗时更长。
“Good to Great” became the bestselling business book of all time, overtaking the long-standing holder of the title, “In Search of Excellence”, by Tom Peters.
《从优秀到卓越》成为了当时最畅销的经营类书籍，超过了此前长时间畅销的汤姆•彼特所写的《寻找优秀》。
The Earth may exist in an underpopulated portion of the Milky Way, meaning we might not encounter another alien intelligence for a long, long time, if at all.
也许，地球所在之处是银河系的犄角旮旯，如果真是这样，我们在短期内不太可能与其他外星智慧生命有接触。
If you chose a high value for the maximum number of hits (Figure 13) but have not applied a filter, you'll find yourself waiting a long time until all of the results display.
如果为最大命中数选择一个较大值(图13)，但没有应用筛选器，则需要等待很长时间才能显示所有结果。
If you chose a high value for the maximum number of hits (Figure 13) but have not applied a filter, you'll find yourself waiting a long time until all of the results display.
如果为最大命中数选择一个较大值(图13)，但没有应用筛选器，则需要等待很长时间才能显示所有结果。
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