自从12月12日以来，这项规定就开始在广东省水荫路小学三年级某班实施了。
The rule has been enforced since Dec. 12 for a class of third graders in Shuiyinlu Elementary School inGuangdong Province.
通过试验，筛选出了适宜在梨园行间种植的多花黑麦草、鸭茅、扁穗雀麦、白三叶等较耐荫草种。
Some shade tolerance forage species of Lolium multiflorum, Dactylis glomerata, Bromus carticus and Trifolium repens were selected to sow in pear orchard.
这篇论文分为两部分，分别讨论了三正则图的列表线性荫度和线性可选性。
The thesis is divided into two parts, which consist of some results on list linear arboricity of cubic graphs and linear choosability of cubic graphs, respectively.
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