Question

7．科学家们宣称在癌症研究上已经取得了重大突破．（不定式）
Scientists claimed to have made/achieved a major breakthrough in the cancer research．

Answer 1

分析 Scientists claimed to have made/achieved a major breakthrough in the cancer research

解答 根据汉语"科学家们宣称在癌症研究上已经取得了重大突破．（不定式）"可知此句需用句型claim to do sth，再结合短语made/achieved a major breakthrough 取得重大突破．可得出翻译：Scientists claimed to have made/achieved a major breakthrough in the cancer research．

点评 句子翻译要注意这几点：单词的准确性（指那些地道的专门的单词翻译），语法问题（包括习惯用语 固定搭配），句子的结构合理．