Hospital beds were scarce and medicines were practically non-existent.
当时医院病床紧缺，药物根本所剩无几。
This kind of training is ineffective, and wasteful of scarce resources.
这种训练没有效果，浪费了稀有资源。
How did diatoms survive if zinc is so scarce?
如果锌如此缺乏，硅藻是如何生存的呢？
However, they have real impacts, as they result in misguided use of scarce resources.
然而，它们有实际的影响，因为它们导致了对稀缺资源的错误使用。
As trees became scarce and they could no longer construct wooden canoes for fishing, they ate birds.
由于树木变得稀少，他们不能再建造木制的独木舟来捕鱼，只好捕食鸟类。
Economists fear that within the next 100 to 150 years, the earth's resources will become very scarce.
经济学家担心，在未来100到150年内，地球的资源将变得非常稀缺。
It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.
可能是雄性可以利用稀少的类胡萝卜素进行免疫防御和解毒，或者吸引雌性。
If more than one species is competing for a scarce resource, the competing species usually switch to different alternative resources.
如果一个以上的物种竞争稀缺的资源，竞争的物种通常会转向不同的替代资源。
Go back in history and this was part of our survival repertoire; like most animals, we drew on our sense of smell, when visual information was scarce, to single out prey.
回顾历史，这是我们生存技能的一部分；像大多数动物一样，当视觉信息匮乏时，我们利用嗅觉来识别猎物。
Furthermore, most species do not depend entirely on a single resource, if the major resource for a species becomes scarce, the species can usually shift to alternative resources.
此外，大多数物种并不完全依赖单一的资源，如果一个物种的主要资源变得稀缺，该物种通常可以转向替代资源。
It was argued that once hunter-gatherers had occupied the whole world, the population started to grow everywhere and food became scarce; agriculture would have been a solution to this problem.
有人认为，一旦狩猎采集者占领了整个世界，世界各地的人口就会开始增长，食物将变得稀缺；农业本来是解决这一问题的方法。
Jobs are becoming increasingly scarce.
工作职位变得越来越少。
Fresh food is so scarce that prices have rocketed.
新鲜食物如此稀缺以致价格飞涨。
They scarce ever had their stomachs full in their lives.
他们从出生到现在几乎从来没有吃饱过。
As economy is declining, jobs available to the young continue to be scarce.
随着经济的衰退，面向年轻人的工作岗位一直处于稀缺状态。
Th' trouble is that sometimes they can scarce keep from burstin' out laughin'.
问题是，有时他们几乎忍不住要笑出声来。
A snack bar producer discovered that the supply of purely grass-fed bison meat was scarce.
一家小吃店的供应商发现，纯草饲野牛肉供应短缺。
These days, because leisure time is relatively scarce for most workers, people use their free time to counterbalance the intellectual and emotional demands of their jobs.
如今，由于休闲时间对大多数工人来说都相对较少，人们通常利用空闲时间来平衡工作中智力及情感上的需要。
The report found that although some king penguins may be able to relocate to new breeding grounds closer to their retreating food source, suitable new habitats would be scarce.
该报告发现，尽管一些帝企鹅可能能够迁移到离它们日益减少的食物来源更近的新繁殖地，但合适的新栖息地将会变得稀缺。
Compared with Metarhizium anisopliae and Beauveria bassiana, the study on Verticillium lecanii is scarce.
相对于金龟子绿僵菌和球孢白僵菌而言，对于蜡蚧轮枝菌的研究十分稀少。
Sadly, spectrum is a scarce resource.
可悲的是，无线电频谱是一种稀缺资源。
资源稀缺。
为何研究稀缺资源？
Reporting is no longer a scarce commodity.
新闻报道不再是什么稀缺商品。
资源稀少。
With fuel scarce, most farmers rely on oxen.
由于燃料缺乏，大多数农民依赖耕牛。
With fuel scarce, most farmers rely on oxen.
由于燃料缺乏，大多数农民依赖耕牛。
应用推荐