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- There is a high pollen count in the air. 空气中有很高的花粉计数。
- Pollen morphology of Umbelliferae in China and its evolution. 中国伞形科花粉形态及其早期演化.
- The space program is the evolution of years of research. 太空计划是多年研究的发展结果。
- Darwin put forth the theory of evolution,. 达尔文提出了进化论。
- Stamen is in the middle of a flower and may produce pollen. 雄蕊长在花的中央,能产生花粉。
- pollen evolution 花粉演化
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石,如花粉粒或单细胞有机体的化石
- Do you know about the evolution of a seed into a plant? 你知道从种子发展成为植物的过程吗?
- The workers have little pollen baskets on their legs. 工蜂脚上有装花粉的小"篮子"。
- Our watchword is: Evolution, not revolution'. 我们的口号是: `要循序渐进,不要剧烈变革.;'
- Anther is a part of a flower that contains the pollen. 花药是花的雄蕊上带花粉的部分。
- The innermost wall of a spore or pollen grain. 内壁孢子或花粉粒最深处的壁
- Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
- In politics Britain has preferred evolution to revolution. 在政治上,英国喜欢渐进而不喜欢革命。
- Our political institutions are in continuous evolution. 我们的政治制度正在不断发展中。
- Pollen sterile blossoms lack normal turgor. 花粉不育的花朵缺乏正常的膨压现象。
- This is a clear exposition of the theory of evolution. 这是对进化论的清晰的阐述。
- The evolution of heat from the sun is inestimable. 从太阳中放射出的热是无法估计的。
- We studied the evolution of flowers from seeds and buds. 我们研究从种籽和花蕾到花的成长过程。
- The pollen is shed directly on the stigma. 花粉直接散落在柱头上。