这是本世纪尚未解开的大奥秘之一。It is one of the great unsolved mysteries of this century.她毕生探索人类心灵的奥秘。She spent her life plumbing the mysteries of the human psyche.他对计算机的奥秘尚未入门.He has not yet been thoroughly initiated into the mysterie...
Relative pronouns and adverbs introduce attributive clauses.关系代词和关系副词引导定语从句.Complete the following sentences by filling the blanks with proper prepositions and adverbs.用适当的冠词和副词填空, 完成下列句子。Some English adverbs function as...