3. Bear in mind that gas stations are scarce in the more remote areas.
记住，加油站在那些比较偏远的地区是很稀少的。
《柯林斯英汉双解大词典》
4. 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。
《牛津词典》
5. 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。
《柯林斯英汉双解大词典》
6. Because oil and natural gas became scarce?
因为石油和天然气变得稀缺了，是吗？
youdao
7. 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？
youdao
8. We should find better ways to make good use of scarce resources.
我们应该找到更好的方法来充分利用稀缺资源。
youdao
9. 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。
youdao
10. 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。
youdao
11. 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。
youdao
12. In some cases, water is so scarce that farmers break open sewage pipes transporting waste to local rivers.
在某些情况，水稀缺到农民们不得不打开污水管道，将污水输送到当地的河流。
youdao
13. 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。
youdao
14. 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。
youdao
15. Countries that need oil are clawing at each other to lock up scarce supplies, and are willing to deal with any government, no matter how unpleasant, to do it.
16. However, toward the end of the eighteenth century, as British oak supplies grew scarce, shipbuilders there turned to teak and found in it an ideal substitute.
然而，到18世纪末，随着英国橡木供应的稀缺，那里的造船厂转向柚木，并在其中找到了理想的替代品。
youdao
17. 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。
youdao
18. 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.
19. 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.
