中国人从中东获得了一种蓝色颜料，这是一种当时在中国很难得到的纯净的氧化钴，这种颜料只含有少量的锰。
From the Middle East the Chinese acquired a blue pigment—a purified form of cobalt oxide unobtainable at that time in China—that contained only a low level of manganese.
三维弹性问题的解析解是很难得到的。
Analytical solutions for three dimensional elasticity problems are quite difficult to obtain.
由于它大部分都不受监管，可靠的统计数据是很难得到的。
Since it is largely unregulated, reliable statistics are hard to come by.
我们想要高兴，但是我们却认为那是挣来的，应得的，很难得到的。
We want to be happy, but we think it should be earned or deserved or hard to come by.
可以是一间更好的办公室，一个很难得到的停车位，一个靠窗的座位，或者一台新电脑。
It can be a nicer office, a hard-to-get parking space, a seat next to a window or a new computer.
他们从好书中不但得到乐趣，而且受到很多教益，他们从中获得的那种精神食粮，从其它地方是很难得到的。
From good books, moreover, they draw much besides entertainment. They gain mental food such as few companions can supply.
过去，健康专家曾警告我们，即使是肺部感染或严重的咽喉痛等常见疾病，有一天也会很难得到医疗护理。
In the past, health experts warned us that the day would come in which it would become very difficult to provide medical care for even common problems such as lung infection or severe sour throat.
过去，健康专家曾警告我们，有一天，即使是肺部感染或严重的咽喉痛等常见疾病，也会很难得到医疗服务。
In the past, health experts warned us that the day would come in which it would become very difficult to provide medical care for even common problems, such as lung infection or severe sore throat.
从那以后，他觉得自己发现了一件神奇的事：要让一个男孩想要什么东西，你只需要让那个东西变得很难得到！
He thinks he has discovered something wonderful since then: to make a boy want something, all you have to do is make that something hard to get!
像天花这种东西很难得到但是其他的有机体也可能会变得很危险。
Something like smallpox is hard to get, but there are other organisms that could become harmful.
但是，贷款人很难得到贷款的比例在继续增长(见图表)。
But the percentage of would-be borrowers finding loans hard to get continues to grow (see chart).
作为欧盟居民的法国人可以没有任何官方登记即可搬到英国去，所以明确的数目很难得到。
Firm Numbers are hard to come by; as European Union (EU) citizens, the French can move to Britain without registering with any authority.
他们能接受的教育也非常有限，因此很难得到改善生活的机会。
Access to education is also very limited, and therefore they have very little opportunity to improve themselves.
在这么远的地方摔断了胳膊或腿将会很难得到帮助，但是更重要的是，他想有尊严地走进这个山谷。
A broken ankle or leg would be a serious thing this far from help, but it was more than that. He wanted to enter the gorge respectfully.
如果不付出这样的努力，将很难得到与你想要和期望的所相匹配的结果。
If you don't take this effort, it will be very difficult to obtain the results that match what you want and expect.
这些词很难得到排名也不能给你带来高质量的流量，把精力集中在那些相关的，但又不是特别通用的词上。
These words are incredibly difficult to rank for and won't drive qualified traffic to your site. Focus on words that are relevant, but not overly used.
仅从研究方程本身很难得到该函数行为的任何想法。
It is very difficult to obtain any idea about the behavior of this function simply from studying the equation.
而且这项竞争协议也包括一些明智的想法，例如，将退休年龄提高到67，废除将工资与物价挂钩的收入指数化制度——尽管这些想法将很难得到一致同意。
And the competitiveness pact includes some sensible ideas, including raising retirement ages to 67 and scrapping indexation systems that link wages to prices-though these will be hard to agree.
但首相的幸运之处在于，对约翰逊的支持和信赖在短期内很难得到验证。
Fortunately for the prime minister, this faith in Mr Johnson is unlikely to be tested soon.
我们很难得到一个准确的数字，更不要说全球的新用户还在不断的快速增加。
But exact Numbers are hard to come by, not least because of the continued rapid growth in the global number of subscribers.
全球的统计数据很难得到，但是至少在美国，畜牧业造成的影响占到到水土流失的55%，杀虫剂使用的37%。
Global statistics are hard to come by, but in the us at least, livestock account for 55 per cent of soil erosion and 37 per cent of pesticide use.
尽管进行了相关的工作，但SOA的业务价值将很难得到业务涉众的认可。
When all is said and done, the business value of SOA would be hard to justify to business stakeholders.
无论具有适应性的青少年的这种观点是多么正确，都很难得到认同——父母们处理青少年那些特别恼人、执拗或绝对令人恐慌的时刻越多就越如此。
This adaptive-adolescence view, however accurate, can be tricky to come to terms with—the more so for parents dealing with teens in their most trying, contrary, or flat-out scary moments.
但是，这是情有可原的，因为它们很难得到精确的结果。这种度量涉及许多有意思的问题(比如缓存的影响)，所以适合作为示例。
But the measurements here redeem themselves because they are tricky to do accurately, and because the many interesting issues that arise (such as cache effects) make them a good example.
但是，如果他们做的不足够多的话，他们很难得到让步。
But it will be hard for them to extract grand concessions if they have not done that much.
但有些时候除了年龄和种族等特点，很难得到一个精确的描述。
But in some cases, beyond classifiers like age and race, it can be hard to come up with an accurate depiction.
在国外的大使馆的领事们谨小慎微，使得申请如此困难，以至于人们很难得到签证。
Consular discretion at embassies abroad can make it so difficult for people to obtain visas.
在国外的大使馆的领事们谨小慎微，使得申请如此困难，以至于人们很难得到签证。
Consular discretion at embassies abroad can make it so difficult for people to obtain visas.
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