Understanding the transformation of compound sentences and complex sentences can help improve the ability in oral and written English expression.

懂得并列句与复合句的转换，有利于提高英语口语和书面语的表达能力。

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And the HSP70-P53 complex have been detected in both breast cancer and oral cancer.

在乳腺癌、口腔癌组织中已证实存在P 53 - HSP70复合物。

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The results show that the oral output of the experimental group was more accurate and more complex than that of the comparative group.

研究发现，实验组口语输出准确性和复杂性明显强于对照组。

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The project takes into consideration the sensitive nature of the oral and intangible heritage which makes its preservation complex and delicate.

UNESCO: Outline of Digital Archiving Project

Dr Amy Berrington, of Cancer Research UK, said the link between oral contraceptive use and cancer risk was highly complex, with studies showing that taking the Pill reduced ovarian and endometrial cancer risk, but increased the risk of breast cancer risk and probably also cervical cancer.

BBC: Oestrogen in the Pill could offer protective benefits