下旬

Then one ovule degenerated, the other which contained zygote kept on developing. Embryo undergone proembryo and globular embyo stage in early part of June. Heart stage embryo developed into torpedo stage, and meanwhile nuclear endosperm formed cellwalls in later June. Birch Fruit matured in July..

此后，一个胚珠退化，另一个含有受精卵的胚珠继续发育。6月上旬，白桦胚正经历原胚球形胚阶段。6月下旬核型胚乳细胞化，心形胚发育为鱼雷胚。7月，白桦果实成熟。

Godwin, director of USA.gov, the federal government's all-purpose information Web portal, and Campbell, head of the government's Web Best Practices Team, know every manacle and chain shackling the government to the 20th century. In a drab conference room one afternoon in late November, they discussed their optimism—and detailed their concerns.

戈德温，USA.gov——联邦政府的信息门户网站总监，和坎贝尔，政府网络最佳决策小组组长，知道政府通往20世纪的每一个阻碍和渠道。11月下旬的一个下午，在一个黄褐色会议室里，他们乐观的讨论并细化他们关心的事情。

Davis missed a 7 ball late in the rack, but a fortunate roll left Dunn snookered.

戴维斯错过了7球下旬在机架上，但幸运的轧辊左邓恩

They say Mr d'Escoto brought the debate forward by several weeks—to a snoozy period in late July.

他们说，d'Escoto把辩论提前了几周，在令人容易犯困的7月下旬进行。

Stromata surrounded the flag leaf sheathes, white, as long as 47.5-165.0 mm. From its appearance in late April until crash in middle July, no mature sexual structures were either observed in nature or conducted by artificial mating tests.

子座长47.5~165.0mm，白色，包裹其宿主植物的旗叶叶鞘；于4月下旬形成，7月中旬完全崩溃；在自然条件下、人工交配试验中，子座上均未形成有性生殖结构。

From September till late November, the air is crisp and fresh, but the sun still remains toasty warm.

从九月到十一月下旬，空气里透出清冷的气氛但倒也新鲜，但太阳却依然对人们那么热烈。

Beyond that, few things are certain. In late September the turm oil spread and intensified. Money markets seized up across the globe as banks refused to lend to each other.

除此之外，事无定数，人心惶惶。9月下旬，因世界各地的银行拒绝互相贷款，货币市场的动荡加剧及扩大。

Based on the scope of aboveground biomass of two main types of steppe vegetation undegraded and degraded, we assessed steppe vegetation degradation rank with the unit of pixel, and compiled steppe degradation distribution map of the middle reach of Xilin River Basin.

以内蒙古锡林河流域中游为研究区，应用Landsat TM资料，结合地面生物量定位测定，建立草原地上生物量估产模型，应用Visual C++编程，估算了2000年7月中下旬锡林河流域中部草原地上生物量。

Animal community structure and diversity showed the marked seasonal changes., The maximum of Arthropods individual number, species number and species diversity were in late July - early August. The groups number of soil animals was the maximum in summer, and the individual number was the maximum in autumn. The species number of birds; was the maximum in spring, the main species of bird community were migratory birds in spring and summer, and the main species of bird community were resident birds in autumn and winter.

节肢动物群落在7月下旬-8月初具有最高的物种数、个体数和多样性指数；土壤动物群落在夏季具有最高的类群数，秋季具有最高的个体数量和多样性指数；鸟类群落在春季具有最高的鸟种组成，春夏季节鸟类群落的主体是候鸟，秋冬季节鸟类群落的主体是留鸟。

As an important reason, lower soil temperature in north half-side of greenhouses causes apothecia emerged earlier, th...

当年病害的严重程度，主要决定于5月下旬至6月中旬出盘期间，是否存在对孢子萌发侵入有利的20～25℃气温，和大于80％左右的相对湿度。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。