Except for the transitional elements, valency electrons are in the outermost electron shell.除去过渡元素外, 价电子位于最外面的电子层.Transitional metals ( Fe 3 + ) play an extremely important role in catalyzing CLA oxidation.变价金属离子 ( Fe~(3...
The big guns rumbled in the distance.远处炮火轰鸣。A bus rumbled along the road at the top of the path.一辆公交车从小径尽头的路上缓慢地隆隆驶过。His stomach rumbled emptily.他的肚子饿得咕咕作响.Speeches rumbled within the walls of the churches.教堂的围墙内传出低沉的演说声...
我们走错路意外地闯进了作战区.We had accidentally strayed into the war zone.转回来, 你走错路了.Turn around! You're going the wrong way.因为我们走错路了,所以迟到了.We're late because we took the wrong road....
The murderer’s entreaties for mercy availed to nothing.无人理会杀人犯的求饶。No words availed to pacify him.说什么也不能使他平静下来.But what availed his expressions or his air?但是神态和表情有什么用 呢 ?The murderer's entreaties for mercy availed to...