Severe steric effects at the reactive carbon would impede the substitution.大的立体效应阻止在碳上的取代.It was intended to impede the apprehension of the person.它旨在妨碍对该人的拘押的.They also impede backmixing of sand.同时也可防止砂子的返混....
It was intended to impede the apprehension of the person.它旨在妨碍对该人的拘押的.They also impede backmixing of sand.同时也可防止砂子的返混.At no time did I make an attempt to impede any investigatory effort.我绝没有试图妨碍过任何调查工作。Severe steric effe...
He could feel his fingers growing numb at their tips.他能感到指尖正在变得麻木。Numb with terror, she stared at the departing maraud-ers.她吓得呆若木鸡，眼睁睁地看着劫匪们离去。First he had been numb. Then the numbness gave way to anger.起初他只是麻木，接着转为了愤怒。...
Fish was unobtainable in certain sections of Tokyo.在东京的某些地方是买不到鱼的。Tickets seem unobtainable to the ordinary mortal.普通人好像根本买不到票。It would take a worldwide crisis to make food unobtainable from any source.只有发生全球性危机,才会到处买不到食...
Three hundred million dollars will be nothing like enough.3亿美元远远不够。After a three-weekend courtship, Pamela accepted Randolph's proposal of marriage.经过3个周末的追求之后，帕梅拉接受了伦道夫的求婚。The three parties will meet next month to ...
MRSA, for methicillin - resistant Staphylococcus aureus, was once spread chiefly in hospitals.MRSA感染, 耐甲氧西林金黄色葡萄球菌, 一度蔓延,主要是在医院.Objective To study urinary infection caused by methicillin resistant staphylococcus aureus (...
Exercise has a major part to play in preventing and combating disease.体育锻炼在疾病防治方面发挥着重要作用。Scientists claim to have identified natural substances with cancer-combating properties.科学家们声称已经发现自然界的某些物质具有抗癌特性。He has put his hea...