It was surprising when the alkali spectra showed unmistakable doublets.当碱金属光谱显示出不容怀疑的双线结构时,是令人惊奇的.The envelope is called a double of doublets.这种峰叫做双合双重线....
The door is shut so that no one may overhear what is said.门关着，这样没人能听见说话的内容。They stepped aside so that their child could not overhear their conversation.他们走到一边去,不让孩子听见他们的谈话.I happened to overhear what he said.我碰巧听到他说的话....
Fortune reigns in gifts of the would , not in lineament of Nature.命运之神是人世间恩惠的主宰, 不能支配自然的相貌.The young girl had regular and delicate lineament.这个年轻姑娘的容貌长得端正而且秀丽.The lineament of the criminal has been found.罪犯的特征已经找到了....