那些补品不会给你带来他们所承诺的那种完美的记忆力。

Those supplements aren't going to give you that perfect memory in the way that they promise.

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2009年12月，各国领导人在哥本哈根会晤时，来自活动人士的有说服力的话语激励他们承诺采取更坚定的行动。

When the leaders met in Copenhagen in December 2009, persuasive words from activists encouraged them to commit themselves to firmer action.

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另外的风险是为泰党的支出承诺具有毁坏力；

Another risk is that Pheu Thai's spending promises prove ruinous;

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