The curettes are meant to be disposable and for single use only.

刮匙是一次性的，只能使用一次。

youdao

Specification: Single use only and discard after use. Only transferred under gravity.

产品说明︰一次性使用，用后销毁。仅适用于重力式输液。

youdao

For single use only, sterile unless package is opened or damaged, sterilized by ethylene oxide.

一次性使用，包装破损，严禁使用，环氧乙烷灭菌。

youdao

Well, I mean the definite article "the", you use when there's only a single specific item that you're talking about.

当你谈论一个特定的项目时，就用定冠词“the” 。

经常犯的失误 - SpeakingMax英语口语达人

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