The upcoming G-20 Summit draws the key national leaders together.

即将召开的20国峰会让关键国家的领导人会集一堂。

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E. g. "Provisional restorations represent a key element in the realization of extensive esthetic rehabilitations".

例子：暂时修复代表了大规模审美的修复的重要元素。

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Personnel turnover in key functions, e. g. , operating, accounting, data processing, internal audit.

重要部门的人员调整，例如，经营、会计、资料处理，内部审计。

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The team also presented, discussed and distributed materials on UNESCO's key on-going activities in the field of, e.g.

UNESCO: NATURAL SCIENCES