型大的发达经济体不应承诺将在2013年前使财政赤字减半，而是可以决定是否提高退休年龄或者解放专业行业。
Instead of promising to halve their budget deficits by 2013, for instance, big rich economies could decide to raise their retirement ages or free up their professional services.
欧盟领导人承诺，不会对希腊(即较小的经济体)坐视不管。
EU leaders promised Greece (a small economy) that it would not be abandoned.
你必须失去任何超出的体脂肪，并承诺给自己改变你的饮食和生活方式，以便更有效地。
You must lose any excess body fat and commit yourself to changing your diet and lifestyle for the better.
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