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。

youdao

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。

youdao

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。

youdao

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

VOA: special.2009.03.27

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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