The result showed different litchi varieties had different content and scale factor of polysaccharide, and black leaf litchi was optimum to extract polysaccharide.

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。

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Callus induction and redifferentiation of black chokeberry leaf in vitro were studied.

研究了黑苦莓叶片愈伤组织的诱导和再分化。

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The townspeople drew back enough to make room for it and then formed a close semicircle about it, looking curiously at the palm leaf which lay across the black cover. No one said anything.

城里人往后退让出一块地方，在灵柩旁围成一个半圆，好奇地望着横铺在黑色灵柩盖板上的那匹棕榈叶。

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The subject for the evening was "Black Cats and Four Leaf Clovers: Stories about Good and Bad Luck".

VOA: special.2009.03.27

Mr. Smith said that he picks a base a black or a green leaf and then thinks about flavors he has recently tasted or smelled that intrigue him.

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He stuck mostly with pant suits, wool shift or trapeze dresses and coats in solids, accented with a sprinkling of white-and-black stripes and large leaf prints in autumnal red, orange-red, green, purple and a rich deep blue.

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Add the bay leaf and thyme, a scant tablespoon kosher salt, and 15 or 20 black peppercorns.

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