它们可以作为个人表述、饰品，代表承诺，或伤感留下的回忆。
They can serve as personal statements, adornments, representations of a commitment, or a sentimental reminder.
业界代表们申明他们只承诺维持森林的规模而不是其生物多样性。
Industry representatives made it clear that their commitment was only to maintain the extent of forests, not their biodiversity.
它确立了直接干预供求关系的原则，并代表了第一个为农民提供更稳定的经济支持的国家承诺。
It established the principle of direct interference with supply and demand, and it represented the first national commitment to provide greater economic stability for farmers.
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