
好词典

源自拉丁语 'sinus',原意为'弯曲'、'海湾'或'褶皱',后引申为解剖学和数学术语。
❶ 指人体内的窦腔,特别是头骨中的空腔,如鼻窦或额窦,与呼吸和声音共鸣有关。
“He had a severe sinus infection that caused headaches.”
(他因严重的鼻窦感染而头痛。)
“The doctor examined her sinuses with a small light.”
(医生用小灯检查了她的鼻窦。)
❶ 在数学中,指正弦函数的缩写,常用于三角学中计算角度与边长关系。
“The value of sin(30°) is 0.5.”
(30度角的正弦函数值为0.5。)
“He graphed the sine curve for his trigonometry homework.”
(他为三角学作业绘制了正弦曲线。)
sinus headache — 由于鼻窦充血或感染引起的头痛,通常伴随面部压力感。
“She took medicine to relieve her sinus headache.”
(她吃了药来缓解鼻窦性头痛。)
sinus rhythm — 医学术语,指心脏正常有规律的跳动节律,心电图显示为规则波形。
“The ECG showed a normal sinus rhythm.”
(心电图显示正常窦性心律。)