diaphragm
US /ˈdaɪ.ə.fræm/
UK /ˈdaɪ.ə.fræm/
名词
1.
膈肌, 横膈膜
a dome-shaped muscular partition separating the thorax from the abdomen in mammals. It plays a major role in breathing, as its contraction increases the volume of the thorax and so inflates the lungs.
示例:
•
The doctor explained how the diaphragm helps us breathe.
医生解释了膈肌如何帮助我们呼吸。
•
A strong cough involves the rapid contraction of the diaphragm.
剧烈咳嗽涉及膈肌的快速收缩。
同义词:
2.
振膜, 光圈
a thin disc or membrane, especially one that vibrates to produce or transmit sound or to regulate the flow of a fluid.
示例:
•
The microphone uses a sensitive diaphragm to capture sound waves.
麦克风使用敏感的振膜来捕捉声波。
•
The camera's diaphragm controls the amount of light entering the lens.
相机的光圈控制进入镜头的进光量。
3.
子宫帽 (避孕用具)
a contraceptive device consisting of a flexible, dome-shaped cup that is inserted into the vagina to cover the cervix and prevent sperm from entering the uterus.
示例:
•
She discussed using a diaphragm as a birth control method with her doctor.
她与医生讨论了使用子宫帽作为避孕方法。
•
Proper fitting is essential for the effectiveness of a contraceptive diaphragm.
正确佩戴对于避孕子宫帽的有效性至关重要。