haematemesis的音標為[?h?m??temi?z?s]，基本翻譯為“嘔血”，速記技巧為“haem（血）+emesis（嘔吐）”。

haematemesis這個詞源自希臘語，意為“血液回流”。它的詞源中包含了“血液”和“回流”兩個概念。

變化形式：在英語中，haematemesis通常使用復數形式，即haematemeses。

相關單詞：

1. hematochezia：血便 - 這個詞由“血液”和“大便”兩個詞組成，表示出血性大便。

2. anaemia：貧血 - 這個詞源自希臘語中的“沒有血液”，表示體內缺乏紅細胞或血紅蛋白的血液狀況。

3. ecchymosis：瘀斑 - 這個詞由“瘀血”和“斑點”兩個詞組成，表示皮膚上因出血而形成的斑點。

4. haematology：血液學 - 這個詞由“血液”和“學科”兩個詞組成，是研究血液和血液相關疾病的學科。

5. haematopea：貧血性 - 這個詞表示與貧血相關的癥狀或狀況。

6. haematemesis-induced：因血液回流導致的 - 這是一個后綴，表示由haematemesis引起的某種狀況或疾病。

7. hyperhaemia：過度充血 - 這個詞表示血液過度充盈的狀況。

8. haematemesis-related：與血液回流相關的 - 這也是一個后綴，表示與haematemesis有關聯的某種狀況或疾病。

9. haematemetria：血便測試 - 這個詞表示對血便的檢測或評估。

10. haematemetic：血液回流相關的 - 這是一個形容詞后綴，表示與血液回流有關的某種特性或狀況。

以上這些單詞都與血液回流有關，反映了醫學和生物學領域的豐富詞匯。

常用短語：

1. blood vomiting

2. hematemesis

3. vomit blood

4. vomit up blood

5. bloody vomit

6. vomit up blood (with)

7. vomit up blood (without)

雙語例句：

1. She was taken to the hospital after experiencing hematemesis. （她因嘔血被送往醫院。）

2. The patient had bloody vomit and was diagnosed with gastric ulcer. （患者嘔血并被診斷為胃潰瘍。）

3. After drinking a large amount of alcohol, he vomited blood and was taken to the emergency room. （他大量飲酒后嘔血并被送往急診室。）

4. Hematemesis is a common sign of gastric bleeding, which can be caused by various reasons such as gastric ulcer or gastric cancer. （嘔血是胃出血的常見癥狀，可能是由胃潰瘍或胃癌等不同原因引起的。）

5. After eating a heavy meal, he experienced hematemesis and was advised to take medication regularly. （他吃完一頓豐盛的飯后嘔血，并被建議定期服用藥物。）

6. The patient vomited blood and was advised to rest for a few days to avoid further complications. （患者嘔血并被建議休息幾天以避免進一步惡化。）

7. After experiencing hematemesis for several days, the patient was diagnosed with gastric ulcer and prescribed medication. （經過幾天的嘔血，患者被診斷為胃潰瘍并被開藥治療。）

英文小作文：

Vomiting blood is a very unpleasant experience that can be frightening and worrying. It is important to seek medical attention promptly when experiencing hematemesis because it can be a sign of serious illnesses such as gastric ulcer or gastric cancer. However, if you are experiencing hematemesis, it is also essential to maintain a calm and composed demeanor to avoid further complications and distress. I hope this experience will never happen to you, but if it does, please remember to seek medical attention promptly and remain calm during this distressing time.