n. [化学]碳;(一张)复写纸;[电]碳精棒[片,粉],碳精电极;复写的副本;
adj. 碳的;碳处理的;
carbo-, carb- 表示与煤炭相关
🗣️ 情景例句
That's alright. You're a lot of help.
没关系。你帮了很大的忙。
Has he studied French very long?
他学习法语很长时间吗?
and near its lower reaches there is a long tailing-off which is almost certainly the result of material transported out to deep water after being eroded from the continental masses.