Hematology is the study of blood: what it is made of, how it works, and the illnesses that change it. A hematology lab looks at red cells (which carry oxygen), white cells (which fight infection), and the sticky parts of blood that help a cut stop bleeding.

Hematology is the study of bloodHematology是研究血液的學問: what it is made of, how it works, and the illnesses that change it研究血液的成分、運作方式，以及會改變血液的疾病. A hematology lab looks at red cells (which carry oxygen)hematology實驗室會檢查紅血球（負責帶氧氣）, white cells (which fight infection)白血球（負責對抗感染）, and the sticky parts of blood that help a cut stop bleeding還有血液裡幫助傷口止血、黏黏的那些成分

This is the American spelling. In British English the same field is haematology, with an extra a after the h. You will see hematology in US hospitals and journals, and haematology in UK writing and in many older textbooks. Though actually, they are not two different sciences; only the letters change.

This is the American spelling這是美式拼法. In British English the same field is haematology在英式英文裡同一個領域叫做haematology, with an extra a after the hh後面多了一個a. You will see hematology in US hospitals and journals你會在美國的醫院和期刊裡看到hematology, and haematology in UK writing and in many older textbooks而在英國的文章和很多老課本裡看到haematology. Though actually不過其實, they are not two different sciences它們不是兩門不同的學問; only the letters change只是拼法不一樣而已

The person who does this work is a hematologist. Everyday English often just says blood tests or blood doctor; hematology is the name of the field itself.

The person who does this work is a hematologist做這份工作的人叫做hematologist. Everyday English often just says blood tests or blood doctor日常英文常常就只說blood tests（驗血）或blood doctor（血液科醫生）; hematology is the name of the field itselfhematology是這個領域本身的名稱