
好词典

源自拉丁语'carbo'(意为煤或炭),通过古法语'carbone'进入英语,复数形式加-s。
❶ 碳的复数形式,指多个碳原子或碳元素。在化学中,碳是构成有机化合物的基本元素。
“Diamonds are made of pure carbons.”
(钻石由纯碳组成。)
“Plants absorb carbons from the atmosphere during photosynthesis.”
(植物在光合作用过程中从大气中吸收碳。)
❶ 复写纸的复数形式,指多张用于复写的薄纸。
“She placed two carbons between the sheets to make copies.”
(她在纸张之间放了两张复写纸来制作副本。)
“The old typewriter required carbons to duplicate documents.”
(旧式打字机需要用复写纸来复制文件。)
carbon copies — 字面意思是复写纸制作的副本,比喻完全相同的复制品或极其相似的事物。
“The twins were like carbon copies of each other.”
(这对双胞胎就像彼此的复刻版。)