| 词汇 | be on firm ground |
| 释义 | be on firm groundTo be certain of or comfortable with something. Anna can tutor you—she's on firm ground with diagramming sentences. be on firm groundbe sure of your facts or secure in your position, especially in a discussion.be on firm ˈgroundbe sure about your beliefs, knowledge, etc.; be confident: I don’t know a lot about physics, I’m afraid. I’m on firmer ground with mathematics, which I studied at university. |
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