圆锥; 视锥; 合
先理解核心含义，再看它在真实句子里的用法。
圆锥; 视锥; 合；同; 灰尘; 虱卵
A prefix, fr. L. cum, signifying with, together, etc. See Com-.
No learner guide for this sense
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圆锥; 视锥; 合；同; 灰尘; 虱卵
A prefix, fr. L. cum, signifying with, together, etc. See Com-.
Use con- naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
Dictionary facts from ECDICT.