商品品质决定交易本质上的价值，因此它是最重要的交易因素之一。贸易上的品质决定方法有：凭样品买卖，凭标准买卖，凭规格买卖等。下面我们来看看有关品质的表达法。

品质优良：quality is excellent/ superior/ very good/ fine/ best/ high/ wonderful/ supreme/ attractive

品质低劣：quality is bad/ inferior/ not good/ poor/ imperfect/ defective/ faulty/ second-rate/ lower/ unsatisfactory

品质保证：retain the good quality; keep up to the standard quality; obtain a good quality; attain the best quality; secure an excellent quality

物品以达标准品质：An article is up to the standard quality; An article is of the same quality as the standard; An article is equal to the standard quality; An article is the same as the standard quality

物品在标准以下：An article is below the standard

物品在标准以上：An article is above the standard

物品和样品一致：An article is up to the sample; An article corresponds with the sample; An article is equal to the sample.

average quality 标准品质

We would like to buy 500 tons of average quality corn.

customary quality 一般品质

The quality of the goods shipped is customary quality.

best quality, prime quality, first-rate quality 最佳品质

The goods supplied shall only be those of best quality.

quality inspection certificate 品质检验证书

Please be sure to attach a quality inspection certificate.

difference in quality 品质上的差异

There is a big difference in quality between the trial order and the order of this time.

guarantee of quality 品质保证

We request a guarantee of quality for a period of one year on all the goods you sell.

sacrifice quality 降低品质

If you sacrifice the quality and deliver goods of imperfect quality to us, we will refuse to accept them.

（来源：大耳朵英语 英语点津 Annabel 编辑）

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