Earwax may not play a prominent part in human history but at least a small role for it has now been found by a team of Japanese researchers.

人类一直以来认为，耳垢对人类历史没有多大的影响，但是现在日本研究人员发现，耳垢其实对人体也起到了一些微妙的作用。

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Be a Positive Part of the safety Team. Willingly accept and follow safety rules. Encourage others to do so. Your attitude can play a major role in the prevention of accidents and injuries.

成为安全团队中积极分子。欣然接受并遵守安全守则。并鼓励他人遵章守纪。你的态度在预防事故和伤害中能起到举足轻重的作用。

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The Eurocodes, DE facto, play a similar role in the field of the ER 1 and a part of ER 2.

事实上，欧洲规范在基本要求1的全部和基本要求2的部分领域中起着相似的作用。

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Again, this is just his personal ambivalence about who he was, and his uncertainty about the role that he had in his own family So, this was a play-acting that was part of his life.

这也表明他对自己的身份的矛盾,以及自己在家庭中的角色的不确定,所以,这种角色扮演成为他生活的一部分

耶鲁公开课 - 欧洲文明课程节选

They play a part in civic life by bringing people together in such an intimate setting, as well as a religious role in purifying the soul.

BBC: An ancient Ottoman capital surfaces

The 11 goals he scored for his former side earlier in the season have played a major part in securing them a second successive season in the Premier League and he may well yet play a significant role in helping his new side into Europe next campaign.

BBC: Liverpool 3-0 Newcastle

Next, they randomly assigned the volunteers to play either buyers or sellers role in negotiations over emails as part of a classroom exercise.

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