Plant architecture or plant type is one of the key target traits for crop improvement, and the stem traits play leading roles in the formation of plant architecture.

株型是作物品种改良的重要目标性状，其中茎秆是最重要的株型性状。

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Los Alamos National Laboratory personnel play leading roles worldwide in basic and applied scientific research and technology.

洛斯阿拉莫斯国家实验室工作人员发挥领导作用在世界各地的基础和应用科学研究和技术。

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While accountants still play leading roles not only in standard setting but also in the crafting of legislation, their work most often goes unseen, at least to most of the world.

虽然会计人员仍然在制定标准和起草立法发挥主导作用，但至少对世界上大多数人来说，会计的工作却往往是不被看见的。

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They quit senior roles at AIG for other leading posts in the insurance industry after Mr Greenberg seemed to play off one against the other without choosing either to take over from him.

ECONOMIST: The end of AIG’s Greenberg era | The