An atom itself is a complete whole, with its electrons, protons and neutrons and other elements...一个原子本身就是一个完整的整体，包括电子、质子、中子及其他元素。The neutrons and protons form the core of the atom.中子和质子构成了原子核.A substance donates protons...
二过氯酸烃基酯产物可用作起爆药的敏化剂及作为烷化剂.The hydrocarbon diperchlorate products have utility as detonatable sensitizers for explosives and alkylating agents.研究了聚氯乙烯 - 吡啶树脂催化乙酰苯胺的N - 烃基化作用,反应条件温和,产品收率令人满意.This paper studied the catalyti...
Now the murderer has two deaths on his conscience.现在，这个杀人犯背着两条人命，受到了良心的谴责。The murderer may well come from the estate...凶手很可能来自那个庄园。The murderer was apparently mentally disturbed.该杀人犯显然精神失常。I say driven because Macbeth is...
He's a scrawny, greyfaced man, who looks half - starved, and he's always very slovenly in appearance.他是个瘦骨棱棱,脸色发灰的人, 活象没吃饱饭, 外表总是非常邋遢.The frontier station was starved for food and water.边防站急需食物和水.In these place...