The U.S. has the greatest academic institutions in the world, but our children are finding it increasingly more difficult to enter their hallowed halls–or at least their science departments.
美国有世界上最大的科研机构，但是我们的孩子发现越来越难进入那神圣的科学殿堂，至少自然科学是这样的。
It breaks the existence problem in the general anti-cancer therapy that the drug is difficult to enter into the nucleus to kill cancer cells, viruses and bacteria directly, and prone to side effects.
它打破了一般抗癌疗法所存在的药物难以直接进入细胞核杀灭癌细胞、病毒和细菌，以及容易产生毒副作用的弊端问题。
They remind me of my freedom to pursue my hobbies during college years, which may be difficult to do after I enter the workplace.
它们让我想起自己能在大学里自由追求个人喜好，而一旦步入工作岗位后，这些恐怕就很难实现了。
It is troublesome to try to enter Strings that you do not know offhand, or that would be difficult to type, like long alphanumeric Strings.
对于输入不知道的字符，或是难于输入的字符(例如长的包括字母和数字的字符)是比较棘手的。
Her reaction is understandable, considering how difficult it is for a foreign artist to enter the Japanese manga market.
她的反应可以理解，要知道一个外籍艺术家进入日本本土漫画市场很不容易。
Although you'll be able to modify the parameters that control the precision with which you need to enter your secret knock, it can still be very difficult to match the precise timing.
尽管您可以通过修改参数来控制输入密码敲打操作所需要的精度，但是这仍然很难匹配精确的时间。
Many agencies manage these rosters at headquarter and country levels, making it difficult for smaller firms to enter the aid business.
许多机构在总部和国家水平上管理这些名单，使得一些较小的公司难以金融援助商业。
Retaining customers also makes it difficult for competitors to enter a market or increase their share of market.
留住客户也使得竞争对手更难以进入这个市场或增加他们的市场份额。
But it is difficult for exogenous gene to enter brain because of the presence of the blood-brain barrier (BBB). This is the main obstacle for gene transfer therapy in central nervous system.
但血脑屏障的存在却使外源性基因难以进入脑内，是中枢神经系统转基因治疗的主要障碍。
Retaining customers also makes it difficult for competitors to enter a market or increase their share of a market.
保持顾客同时也能够增加竞争者进入市场的难度或增加他们的市场份额。
Anguillan passport holders entering nearby French Saint Martin could make it more difficult for them to enter the French overseas department, the closest neighbour to the Territory;
注意到对进入附近法属圣马丁岛的安圭拉护照持有者的签证要求出现变化，使得他们更难以进入领土最近的这个法国海外省；
As the soil pests live in the soil depths, the pesticide spraying by ordinary sprayer can't enter into soil, It is very difficult to get rid of them.
由于地下病虫害发生在土壤深处，普通施药机械的药液难以深入土层，给防治带来困难。
The main piers, support piers are in the river, and unable to enter the large-scale construction of boats piling region. Its construction is difficult.
黄浦江大桥主墩、辅助墩都位于江中，而且大型打桩船无法进入施工区域，其施工难度大。
One is that the portion of domestic market will be reduced relatively. The other is that it is difficult for our sports enterprise to enter the international market on a large-scale.
一是国内市场份额的相对减少 ，二是国内体育企业还难大规模进入国际市场。
Although it is not sure for "Search market", it is very difficult for the latter players to enter the market.
搜索市场虽不是大局已定，但后来者想从零开始已经很难。
Customers that stay with you tend to be satisfied with the relationship and are less likely to switch to competitors, making it difficult for competitors to enter the market or gain market share.
客户和你在一起往往与关系满意，不太可能切换到竞争对手，使竞争对手难以进入市场或扩大市场份额。
Then it will be time to leave the mountains. It will be difficult to re-enter the world of automobiles, roads, buildings, stores, computers, television and crowds of people.
到那时是离开这里的时候了，再来一趟这个远离汽车，公路，高楼大厦，超级市场，电脑，电视和拥挤的人群的世界就不知道到什么时候了。
Then it will be time to leave the mountains. It will be difficult to re-enter the world of automobiles, roads, buildings, stores, computers, television and crowds of people.
到那时是离开这里的时候了，再来一趟这个远离汽车，公路，高楼大厦，超级市场，电脑，电视和拥挤的人群的世界就不知道到什么时候了。
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