It is for one-time use.

此系一次性使用。

youdao

Generally you would not want this; however, this could be useful if you or a user wishes to choose a password for a one-time use that is entered manually.

一般来说，我们不需要这种结果；但是，如果希望选择要手工输入的一次性密码，这种输出是有用的。

youdao

One-time use of cocaine increases levels of G9a. But repeated use works the other way, suppressing the protein and reducing its overall control of gene activation.

吸食一次可卡因会增加G9a的浓度，然而上瘾之后反而会使其浓度降低，抑制蛋白质的活动，削弱其对基因开关的全面控制。

youdao

The company also makes a version for one-time use.

VOA: special.2010.07.13

Publications on the QUE Store are available ranging from one-time use to ongoing subscriptions.

ENGADGET: Plastic Logic debuts QUE proReader, shows off truVue publications

The U.S. Food and Drug Administration has only approved it for one-time use, rather than multiple uses.

WSJ: Panel Pushes Vaccine for Pregnant Women

Monsanto contended that commodity grain is restricted for use as feed, not cultivation, and its use, even as a second year commodity purchase violates the one-time use license agreement.

FORBES: Connect