在意大利，每年大量捕杀野生动物的现象令人震惊。The annual slaughter of wildlife in Italy is horrific.有时商店里的某些杂货会有脱销的现象。The stores are sometimes sold out of certain groceries.过去10年中，少女怀孕的现象不断增多。Teenage conceptions have risen steadily in the last...
大部分食物变得简直毫无味道 —— 烤牛肉好比软橡胶, 桔子像未加香料的明胶.Most foods are simply tasteless - roast beef is like soft rubber, an orange like unfla - vored gelatin.由于这些原因, 琼脂很快代替了明胶,或为细菌学研究的较理想的固化剂.For these reasons, agar rapidly replaced gela...
Objective To investigate the non - alkaloid constituent of Hippeastrun vittatum ( Amaryllidaceae ).目的研究 石蒜 科植物 花朱顶红中非生物碱类成分.I am a private collector of Amaryllidaceae.我是一名收藏石蒜的私人收藏家.Molecular Cloning of a Novel Mannose -...