4 sentences

1. ‪这把刀是一次性的吗？

   ‪ zhè bǎ dāo shì yī​cì​xìng de ma?

   Is this knife disposable?

   Source: OpenSubtitles

2. 为了卫生，请使用一次性手套。

   wèi​le wèi​shēng, qǐng shǐ​yòng yī​cì​xìng shǒu​tào.

   For hygiene, please use disposable gloves.

   Source: Dong Chinese Dictionary

3. 请减少使用一次性塑胶制品以保护环境。

   qǐng jiǎn​shǎo shǐ​yòng yī​cì​xìng sù​jiāo zhì​pǐn yǐ bǎo​hù huán​jìng.

   Please reduce the use of disposable plastic products to protect the environment.

   Source: Dong Chinese Dictionary

4. 他获得了一次性奖金。

   tā huò​dé le yī​cì​xìng jiǎng​jīn.

   He received a one-time bonus.

   Source: Dong Chinese Dictionary