例句與造句

1. As long as the intended meaning is clear from the context, & le; will suffice to denote the corresponding relational symbol, even without prior introduction.
2. If the vocabulary for ? consists of relational symbols, then ? can be regarded as a sentence in existential second-order logic ( ESOL ) quantified over the relations, over the empty vocabulary.
3. It's difficult to find relational symbol in a sentence. 用relational symbol造句挺難的