discoloration 核心詞議：
n. 變色；退色；變色處；退色處
discoloration 基本解釋
速記方法知識擴展
中文詞源
中文詞源：
discoloration
精選例句
1、 Leaves develop chlorosis;stems are short and slender,and anthocyanin discoloration occurs on stems,petioles,and lower leaf surfaces.
葉片變得萎黃，莖短而纖細，并且在莖、葉柄和葉片下表面會出現花青素變色。
常見考點例句：
- Fluorosis can cause tooth discoloration or surface irregularities .
- 氟中毒會導致牙齒變色或表面缺陷。
- The eyes and fingernails show only slight discoloration .
- 眼球和指甲僅僅只有少量的變色。
- Adverse effects include temporary skin irritation and allergy , hair breakage , skin discoloration and unexpected hair color results .
- 副作用包括短暫的皮膚刺激和過敏癥、頭發受損、皮膚變色和意想不到的頭發顏色結果。
- Excessive sun light exposure of the root aboveground level would result in greenish discoloration near the top end due to chlorophyll photo-pigment deposition .
- 過多的太陽光照射根地面水平將導致綠色變色靠近頂端由于葉綠素光色素沉積。
- Pots can sometimes get a black film on the bottom which is almost impossible to remove ; this is caused by over-cooking or just natural discoloration due to highly acidic foods .
- 有時候鍋底會出現一薄層黑色物質，很難清洗掉；這是由于過度烹煮或高酸性食品所引起的變色。