The key is to purchase quality products for long-standing use.

关键是买高品质的东西，以便长期使用。

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UV rays contribute to all kinds of eye problems, including cataracts and glaucoma, so purchase quality sunglasses.

紫外线会诱发各种眼疾，包括白内障和青光眼，所以要买质量好的太阳镜。

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If you also purchase quality items, you will cherish and enjoy them longer, plus you won't have to buy as many replacements in the future.

如果你也购买优质物品，你将有更长的时间来珍惜和享受他们。

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Our proposal establishes small-business health plans, which allow smaller firms to band together through associations and purchase quality health care -- even across state lines -- at a more affordable cost.

CNN: Commentary: Health bill could handicap small businesses

People spend hours analyzing their next purchase by comparing quality and prices in order to get the very best deal possible.

FORBES: Seller beware: don't give away the store when selling

Years ago I set out to purchase museum-quality ancient art from private hands, to care for it, study the works, keep them in trust and display and lend them.

FORBES: There's Big Money And The Need For Reform In The Antiquities Trade