isoleucine
isoleucine — 名詞
1. an amino acid that the human body needs to stay healthy but cannot make by itsel
異白胺酸
須由飲食獲取的必需胺基酸
an amino acid that the human body needs to stay healthy but cannot make by itself; it must come from eating protein-rich foods such as meat, fish, eggs, and beans
Dr. Hassan told the young swimmer that isoleucine helps rebuild muscle after a long race.
Hassan 醫生告訴年輕的游泳選手，異白胺酸這類必需胺基酸有助於長時間比賽後的肌肉修復。
collocation: isoleucine helps rebuild [tissue]
Feng checked the protein bar and found isoleucine listed third on the amino acid panel.
Feng 查看了蛋白棒，發現異白胺酸在胺基酸成分表中排在第三位。
The hospital dietitian added extra portions of isoleucine-rich food to the recovery ward menu.
醫院的營養師在康復病房的菜單中增加了富含異白胺酸的食物。
Mayumi felt tired and her muscles recovered slowly without enough isoleucine in her diet.
Mayumi 因為飲食中缺乏足夠的異白胺酸，感到疲倦且肌肉恢復緩慢。
Kian learned that his body broke down isoleucine from the fish he ate for lunch.
Kian 學到他的身體會分解午餐吃的魚中的異白胺酸。
用法筆記
Often grouped with leucine and valine under the label 'branched-chain amino acids' or 'BCAAs' in nutrition and sports science.
常見錯誤
2. a solid, water-repelling amino acid whose molecules contain the same number and
異白胺酸
白胺酸的同分異構物
a solid, water-repelling amino acid whose molecules contain the same number and type of atoms as leucine but arranged in a different shape, giving it distinct properties
Amelia placed the crystalline isoleucine sample under the microscope for the morning lab session.
Amelia 將結晶異白胺酸樣本放在顯微鏡下，進行上午的實驗課程。
collocation: crystalline isoleucine
The exam question asked Haruto to explain why isoleucine and leucine have different properties.
考題要求 Haruto 解釋為什麼異白胺酸和白胺酸具有不同的性質。
Professor Devika drew the chemical structure of isoleucine on the whiteboard for her students.
Devika 教授在白板上為學生畫出異白胺酸的化學結構。
Ines shook the glass vial and watched the isoleucine crystals slide across the water without mixing in.
Ines 搖晃玻璃瓶，看著異白胺酸結晶滑過水面而不與水混合。
Professor Kim drew a diagram showing isoleucine stays in the protein's centre because it cannot mix with surrounding water.
Kim 教授畫了一張圖，說明異白胺酸留在蛋白質中心是因為它無法與周圍的水混合。
用法筆記
The 'iso-' prefix indicates that this molecule is a structural isomer of leucine — same atoms, different arrangement. Distinguish from sense 1, which focuses on nutritional role rather than chemical identity.