2 sentences for 保留 (bǎo​liú — to reserve)

1. 请提前与我们联系以保留您的位置。

   qǐng tí​qián yǔ wǒ​men lián​xì yǐ bǎo​liú nín de wèi​zhi.

   Please contact us in advance to reserve your place.

   Source: CCMatrix

2. 请记住，果断的语气和无保留的拒绝只会加剧问题。

   qǐng jì zhù, guǒ​duàn de yǔ​qì hé wú bǎo​liú de jù​jué zhǐ​huì jiā​jù wèn​tí.

   Keep in mind that your decisive tone and outright refusal will only intensify the problem.

   Source: CCMatrix