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a mottled [noun]
mottled 作定语时直接放在名词前，常形容表面有杂色斑块的物体。
The mottled leaves were scattered across the path.
斑驳的叶子散落在小路上。
斑驳的；杂色的；有斑点的
先理解核心含义，再看它在真实句子里的用法。
斑驳的；杂色的；有斑点的
marked with spots or blotches of different colors or shades, as if stained
The mottled leaves were scattered across the path.
斑驳的叶子散落在小路上。
常形容表面有不规则杂色斑点；医学上也指皮肤等斑状变色。
斑驳的；有斑点的。
Colored in patches; spotted.
有斑点或色块的
having spots or patches of color
The old dog's mottled coat showed patches of gray and brown.
那只老狗斑驳的皮毛上呈现出灰褐色相间的斑块。
She wore a mottled scarf with irregular spots of blue and green.
她围着一条蓝绿斑点不规则的杂色围巾。
The leaves were mottled with yellow, a sign of the coming autumn.
树叶上有黄色斑点，这是秋天将至的迹象。
mottled 作定语时直接放在名词前，常形容表面有杂色斑块的物体。
The mottled leaves were scattered across the path.
斑驳的叶子散落在小路上。
mottled with 后接颜色、斑点等，描述表面混合的杂色斑块。
The bird's chest is mottled with olive and white.
这只鸟的胸部带有橄榄色和白色相间的斑纹。
Not this
The bird has a mottle chest.
Use this
The bird has a mottled chest.
mottled 是形容词，表示“斑驳的、有斑点的”，而 mottle 是动词或名词，不能直接修饰名词；作定语时要用过去分词形式 mottled。
Not this
Her skin mottled with red patches.
Use this
Her skin is mottled with red patches.
mottled 是形容词，作表语时必须与 be 动词连用，不能把它当作动词直接使用。
Not this
The leaves are mottled by yellow spots.
Use this
The leaves are mottled with yellow spots.
表示“带有……斑点”的特征时，mottled 后要用介词 with，而不是 by；by 通常引出施动者，这里需要的是伴随状态。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
斑驳的皮肤
The doctor noticed the mottled skin on the patient's legs.
医生注意到病人腿上斑驳的皮肤。
斑驳的外观
The old wall has a mottled appearance from years of rain.
这面旧墙因多年雨淋而呈现出斑驳的外观。
斑驳的叶子
This plant is loved for its mottled leaves.
这种植物因其斑驳的叶子而受到喜爱。
斑驳的花纹
The butterfly has a mottled pattern on its wings.
这只蝴蝶的翅膀上有斑驳的花纹。
斑驳的羽毛
The young bird's mottled plumage helps hide it from predators.
幼鸟斑驳的羽毛有助于它在捕食者面前隐藏。
Use mottled naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 motley（杂色的）一词，mottled 就是斑驳的色块，像调色盘上未混匀的颜色。
语域：neutral 常见场景：描述动物毛发或羽毛的颜色、描述植物叶片或物体的表面、医学或皮肤科描述 mottled 用于描述表面带有杂色斑点或斑块的物体，比较常见于书面、文学或科学描述中；日常口语中不算常用，但并非正式用语。
与 mottled /ˈmɑtəld/ 真正押韵的是 bottled /ˈbɑtəld/（重读元音及之后发音相同）。spotted /ˈspɑtɪd/、dotted /ˈdɑtɪd/ 拼写和词义相近，但结尾是 /ɪd/ 而不是 /əld/；dappled /ˈdæpəld/ 元音不同；toddled /ˈtɑdəld/、waddled /ˈwɑdəld/ 拼写相似，但辅音是 /d/（美语口语中 mottled 的 t 常发闪音，听起来接近）。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.