他弯腰蹲下，把小狗们都抱到自己腿上。He bent to a squat and gathered the puppies on his lap.她弯腰向下,左右手交叉触及脚趾.She reached down, touching her toes with opposite hands.我本想弯腰溜过去，但被他们看到了。I wanted to duck down and slip past but they saw me....
There were television crews and pressmen from all around the world.来自世界各地的电视工作者和新闻记者齐聚一堂。All around he could hear people calling out his name.他听见人们在四周喊着他的名字。The smells of delicious foods floated all around him.美食的香味弥漫在他的...
化学家用电解法把水还原为氢.The chemist reduced water by electrolysis.经氧化 ― 还原反应, 铜渗入铁中.By oxidation - reduction reaction, copper is cemented into the iron.在需氧体系中, 氧是末端电子接受体并且被还原.In aerobic systems, oxygen is the terminal electron acc...