他们想过要在20世纪80年代不停地出唱片。They flirted with the idea of making records throughout the 1980s.莉萨突然笑容满面地出现在门口时，她吓了一跳。She was startled when Lisa popped up at the door all smiles.他们急匆匆地出了城。They highballed out of town....
The combined contraction of the atria and ventricles is a heartbeat.心房和心室的这一系列动作合称为一次心跳.During inhalation, contraction of the intercostal muscles elevates the ribs.吸气时肋间肌收缩,提起肋骨.The surface electromyogram ( EMG ) and int...