Grammar Note
表示“木炭（材料）”时不可数；表示“绘画用的炭笔/炭条”时可数，复数形式为 charcoals。
木炭
charcoals — plural of charcoal
先理解核心含义，再看它在真实句子里的用法。
木炭
a black carbon material made by heating wood or other organic matter without air
We used charcoal to grill the chicken in the backyard.
我们在后院用木炭烤了鸡肉。
通过木材或其他有机物的破坏性蒸馏获得的不纯碳,即在无氧条件下加热。
impure carbon obtained by destructive distillation of wood or other organic matter, that is, heating it in the absence of oxygen.
通过在无空气条件下加热木材或其他有机物质获得的含碳材料
a carbonaceous material obtained by heating wood or other organic matter in the absence of air
用于绘画的黑色碳棒。
A stick of black carbon material used for drawing.
用于绘画的黑色碳棒
a stick of black carbon material used for drawing
The artist sketched a portrait with a stick of charcoal.
那位艺术家用一根炭笔勾勒了一幅肖像。
After the fire, only black charcoal remained in the pit.
火灭之后，坑里只剩下黑色的木炭。
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发长 /oʊ/ 音 (如 boat, coat)
Use charcoals naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
表示“木炭（材料）”时不可数；表示“绘画用的炭笔/炭条”时可数，复数形式为 charcoals。
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.