总统把共和国推到了战争的边缘。The president placed the republic on a war footing.在禁区边缘他两次将球踢飞。He miskicked the ball twice at the edge of the penalty box.这是眼睑边缘红肿发炎的症状。This is an irritation and inflammation of the edge of the eyelid....
Hydrogen is a one - valence element.氢是一价的元素.Valence is a sleepy little town just south of Lyon.瓦朗斯是里昂南面一座寂静的小镇。Every element tends to satisfy both its primary and secondary valence.每一元素倾向于既满足它的主价又要满足它的副价....