她叹了口气，然后继续用温柔、平静的声音说下去。She sighed, then continued in a soft, calm voice.他穿着简朴，过着平静的家庭生活。He dressed simply and led a quiet family life.他看着船边平静的水。He watched the still water over the side of the boat....
I still suffer from catarrh and sinus problems.我仍然患有黏膜炎和鼻窦炎。This normal variation in rhythm is known as sinus arrhythmia.节律的这种正常变化称为窦性心律失常.Sinus bradycardia occurs when the heart rate falls below 60.窦性心动过缓是心率低于60次....