dilation

dilation的音标是[ˌdaɪləˈneɪʃn]，基本翻译是“扩张，膨胀”。速记技巧是：可以联想到扩张的物体，如气球、水桶等。

Dilation 的词源是拉丁语 dilatus，意为“扩展，扩大”。其变化形式包括 dilated（扩大的），dilatant（扩大的动作者），dilatation（扩大）。

相关单词：

1. Diameter（直径）：直径是圆形或椭圆形物体中通过圆心并垂直于表面的线段。其词源可以追溯到拉丁语，其中 diametrum 意为“圆的边缘”。

2. Expand（扩展）：这个单词用来描述物体向外伸展或扩张的过程。其词源可以追溯到拉丁语 expandere，意为“展开”。

3. Density（密度）：密度是物质的质量与其体积之比。这个词源于拉丁语 densitas，意为“紧密性”。

4. Dilute（稀释）：这个词用来描述将浓度较高的物质稀释成较低浓度的过程。其词源可以追溯到拉丁语 diluere，意为“流淌”。

5. Elevation（提升）：这个词用来描述物体向上移动或提升的过程。其词源可以追溯到拉丁语 elevare，意为“举起”。

6. Eccentric（偏心）：这个词用来描述偏离中心的位置或状态。其词源可以追溯到拉丁语 eccentricus，意为“偏离中心的”。

7. Diligent（勤奋的）：这个词用来描述努力工作或学习的人。其词源可以追溯到拉丁语 diligere，意为“努力工作”。

8. Diminish（减少）：这个词用来描述物体或数量逐渐减少的过程。其词源可以追溯到拉丁语 diminuere，意为“变小”。

9. Diffuse（扩散）：这个词用来描述物质或能量向四周扩散或散发的过程。其词源可以追溯到拉丁语 diffundere，意为“散布”。

10. Elevation（提高）：在某些情况下，elevation也可以指代提高水平或质量的过程。其词源可以追溯到拉丁语 elevare，意为“抬起”或“升高”。

常用短语：

1. dilation of the eyes

2. dilation of the pupils

3. dilation of the blood vessels

4. dilation of the brain

5. dilation of the intestines

6. dilation of the lungs

7. dilation of the heart

例句：

1. Her pupils were dilated after staying up all night studying.

2. The doctor"s examination revealed a dilation of the brain.

3. The patient"s intestines were dilated due to lack of food.

4. After drinking a glass of wine, his heart began to dilate.

5. The lungs of the patient with pneumonia were dilated due to fluid buildup.

6. The dilation of the pupils during a car accident was a sign of possible concussion.

7. The doctor"s diagnosis included a dilation of the heart, indicating a possible heart attack.

英文小作文：

Dilation: An Important Medical Sign

Dilation is a common phenomenon in many parts of the body, and it can be a sign of various medical conditions. When referring to dilation, we are usually referring to widening or expansion of an organ or tissue. In this case, we are specifically discussing dilation of the pupils, blood vessels, intestines, brain, lungs, and heart.

For instance, dilation of the pupils can be caused by drugs or alcohol, excitement, or lack of oxygen to the brain. It is also a common sign of concussion or blunt force trauma to the head. On the other hand, dilation of the blood vessels can be caused by high blood pressure, and it is a warning sign of impending stroke or heart attack.

Understanding these types of dilation and their potential implications is crucial for proper diagnosis and treatment. Knowing when to seek medical attention and what to expect during treatment can help alleviate unnecessary anxiety and promote better outcomes for patients.