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ivory (uncountable material)
作材料名词时不可数，不与不定冠词连用。
The jewelry is carved from pure ivory.
这件首饰是用纯象牙雕刻的。
象牙；象牙质
先理解核心含义，再看它在真实句子里的用法。
象牙；象牙质
The hard white substance from the tusks of elephants and walruses, used for making things.
The jewelry is carved from pure ivory.
这件首饰是用纯象牙雕刻的。
大象、海象等动物长牙的坚硬白色牙本质。
The hard white form of dentin which forms the tusks of elephants, walruses and other animals.
一种坚硬光滑的象牙色牙本质,构成大部分象牙和海象的獠牙
a hard smooth ivory colored dentine that makes up most of the tusks of elephants and walruses
象牙色,一种奶油白。
A creamy white color, the color of ivory.
一种白色,类似漂白骨头的颜色
a shade of white the color of bleached bones
The piano keys are made of ivory.
这些钢琴键是由象牙制成的。
She wore an elegant dress in a shade of ivory.
她穿着一件优雅的象牙色连衣裙。
The antique shop sells carved ivories from Asia.
这家古董店出售来自亚洲的象牙雕刻品。
作材料名词时不可数，不与不定冠词连用。
The jewelry is carved from pure ivory.
这件首饰是用纯象牙雕刻的。
复数形式常指钢琴键，用于习语"tickle the ivories"。
The pianist's fingers danced across the ivories.
钢琴家的手指在琴键上飞舞。
比喻脱离现实、专心于抽象思考的环境。
The professor was criticized for being stuck in an ivory tower.
这位教授因固守象牙塔而受到批评。
Not this
She bought an ivory necklace made of an ivory.
Use this
She bought an ivory necklace made of ivory.
作为材料名词时，'ivory'是不可数名词，不能加不定冠词'an'。直接用'ivory'即可表示象牙材料。
Not this
The walls were painted in an ivory color.
Use this
The walls were painted ivory.
'ivory'本身可以作为颜色名词，不需要加'color'。'ivory color'是冗余表达，应直接使用'ivory'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
象牙塔（比喻脱离现实生活或实际困难的境地）
Academics are often accused of living in an ivory tower, disconnected from the real world.
学者们常被指责生活在象牙塔中，与现实世界脱节。
象牙雕刻
The museum has a beautiful collection of ancient ivory carvings.
博物馆收藏了一批精美的古代象牙雕刻。
象牙贸易
The international ivory trade has been banned to protect elephants.
为了保护大象，国际象牙贸易已被禁止。
象牙白（一种带淡黄的白色）
She chose an ivory white dress for her wedding.
她为婚礼选了一件象牙白的裙子。
象牙塔
Academics are often accused of living in an ivory tower, detached from the real world.
学者常常被指责生活在象牙塔中，脱离现实世界。
Use ivory naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
象牙（ivory）洁白光滑，想象大象的獠牙，表面如奶油般细腻。
中性；常用于描述材料（如象牙雕刻）或颜色（象牙白），在艺术、文物、时尚或设计领域中出现
通常作为不可数名词，但复数形式指代多个象牙制品
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.