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- In 2000, determination of resistance to capricorn beetle in early stage has been done on 17 kinds of poplar species by use of this kind of method. 2000年利用该方法对17个杨树品种进行了天牛抗性早期鉴定。
- The results showed the salt-tolerance ability of Populus simonii was better than other poplar species, follow was Liaoning poplar, and Triploid poplar just could survive with salt-drained engineer. 结果表明，小胡杨的生态适应性较强，其次是辽宁杨，毛白杨在排盐工程措施条件下也可以栽植。
- GROWTH COMPARISON OF DIFFERENT POPLAR SPECIES ON FLOOD BED 河滩地不同杨树品种生长对比试验
- Effects of salinization stress on photosynthetic pigment content to several poplar species 盐碱胁迫对几种杨树光合色素含量的影响
- A poplar tree, especially a cottonwood. 三角叶杨一种杨树，尤指三角叶杨
- Do wolves belong to the canine species? 狼是犬科动物吗？
- A COMPARATIVE STUDY ON RESISTANCE OF DIFFERENT POPLAR SPECIES (VARIETIES) TO CANKER DISEASE 杨树不同种(品种)间抗溃疡病差异的比较
- We should do our best to save endangered species. 我们应该竭尽全力挽救濒于灭绝的生物。
- I eulogize the tall and straight trunk of the white poplar. 我赞美白杨树那挺拔的树干。
- This rare bird has become an endangered species. 这种珍禽已成为濒临灭绝的物种。
- After a while, we find a shady place under some poplar trees. 过了一会儿，我们在一些白杨树下面找到了一个遮阴的地方。
- He was wearing a strange species of hat. 他戴着一种奇怪的帽子。
- The poplar leaves rustled in the wind. 杨树叶子被风吹得刷刷响。
- There are many species of chrysanthemum. 菊花品种很多。
- Today the survival of our species is threatened. 今天人类的生存受到了威胁。
- The giant panda has become an endangered species. 大熊猫已成了一种濒临灭绝的动物。
- Bring up in town, the boy find it difficult to separate a poplar from a willow. 那男孩是在城里长大的，所以觉得很难区别杨树和柳树。
- Unlike most other bats, this species is diurnal. 这种蝙蝠与大多数蝙蝠不同，是在日间活动的。
- The leaves of the poplar trees rustled in the wind. 风吹着白杨树叶沙沙地响。
- On Infectious Degree of 25 Species of Poplar by Valsa sordida Nits. 25种杨树感发烂皮病程度的研究。
