好词典

sinus

UK //ˈsaɪnəs//US //ˈsaɪnəs//

词源

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。

noun

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。)

同义词:cavity, hollow, sinus cavity

常见短语

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。)