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An alkaloid, C19H22N2O, derived from the bark of various cinchona trees and used as an antimalarial agent.

金鸡纳宁，辛可宁一种生物碱，c19h22n2o，由金鸡纳树的树皮中制得，用作抗疟疾剂

AIM: To synthesize 2 novel chiral ligands derived from cinchona alkaloids and study their catalytic performance in asymmetric dihydroxylation of 5 olefins.

目的：合成两种新的金鸡纳生物碱类衍生物配体并将其用于催化五种烯烃的不对称二羟化反应，考察催化效果。

The name "Citrine" is derived from the French word for lemon.

这个名字"黄晶"来源于法语词的柠檬。

The other commonly used method of fractional-N synthesis is to drop an output clock pulse based on some rule derived from a counter state machine.

微少-N 综合的普遍二手方法将降低以起源于一部柜台州机器的一些规则为基础的输出时钟脉膊的另一个。

The criterion equation of closed finned tube is derived from the results of numerical computation.

最后根据数值模拟结果拟和出了封闭式翅片管的换热关联式。

Fifty-three primer combinations were found to amplify nuclear DNA of Chinese cabbage, properly. They amplified the fragments up to 4 381 with an average of the 83. Among them, 9 markers derived from 9 primer combinations were linked to the clubroot resistance gene.

筛选出的适宜53对引物组合共扩增出4381条带，占总扩增片断的33.50%，平均每对扩增出83条，其中9个组合扩增出与抗根肿病基因连锁标记。

It was discovered in the late nineteenth century as a derivative of toluene (a solvent derived from coal tar).

它是于十九世纪后期作为甲苯（一种煤焦油的可溶的衍生物）的一种衍生物被人发现的。

Cochineal and carmine are two red food colorings that are derived from bugs - the cochineal bug to be exact.

胭脂红和洋红色是两种从昆虫身上提取的食物染色剂，准确来说是胭脂虫。

Vegans choose not to eat any foods derived from living or dead animals - no meat of any kind (no red meat, poultry, white meat, fish etc.), no animal milks (no cow's dairy products, nor sheep, goats etc.), no eggs, no honey, nor any other animal products no gelatin, cochineal, shellac etc.

素食者选择不要吃任何食物，来自活的或死的动物-没有肉的任何种类的（也没有红肉类，家禽，白肉类，鱼类等），没有动物，牛奶（没有奶牛的奶类制品，也不是绵羊，山羊等），没有鸡蛋，没有蜂蜜，或任何其他动物产品（无明胶，胭脂虫，虫胶等

A crimson pigment derived from cochineal.

胭脂红色素从胭脂虫体提取的一种深红色色素

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。