At the same time, because important decisions need a two-thirds majority, someone has to knock heads together.

与此同时，因为重要的决策需要三分之二的多数同意，所以必须有人集思广益。

Instead, Mr. Brahimi was forced to shuttle between the two rival delegations abhorrently knocking heads together to iron out last-minute disagreements.

然而，卜拉希米却不得不在双方代表团之间穿梭，希望解决最后的分歧。

China's rising political and economic might, and its growing appetite for energy, mean it has more at stake in the Middle East than it used to, but it still lacks the clout to knock heads together.

中国的政治经济实力在快速发展，带动能源需求的增长，这意味着对中东的利益要比以往要更加关注, 但是中国依然缺乏足够的影响力将双方聚在一起。