"红砂"是个多义词，它可以指红砂（意大利品牌）,红砂（侧膜胎座目柽柳科植物）,红砂（铸造用红砂）,红沙（中药）。
老红砂是中国东南沿海独具特色的第四纪沉积物。
The "Old Red Sand" is the Quaternary deposits with distinctive features in the coastal area of southeast China.
红砂叶片的净光合速率、蒸腾速率和气孔导度的日变化均为上午和下午较高，中午高温高光时最低。
The Pn, E and Gs of Reaumuria soongorica were higher in the morning and afternoon than in the noon.
澳大利亚的一些海滩黄如金，一些红如火，一些白如云，一些海滩甚至有黑砂。
Some Australian beaches are gold like the sun, others red like a fire, and a few so white they almost look like clouds on the ground. Some beaches even contain black sand.
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