相反，例如黑叶蔬菜、全谷物、花生酱、牛奶和海鲜一类的小食，可以助你实现高效学习。
Instead, snack on studying-friendly foods like dark leafy greens, whole grains, peanut butter, milk and seafood.
结果表明，荔枝品种不同，多糖的换算因子和含量也随之各异，黑叶荔枝最适合提取荔枝多糖。
The result showed different litchi varieties had different content and scale factor of polysaccharide, and black leaf litchi was optimum to extract polysaccharide.
从节点到后代叶节点的所有简单路径都包含相同的黑节点数。
Every simple path from a node to a descendant leaf contains the same number of black nodes.
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