2 sentences for 水平 (shuǐ​píng — horizontal)

1. 请保持桌面水平。

   qǐng bǎo​chí zhuō​miàn shuǐ​píng.

   Please keep the tabletop level.

   Source: Dong Chinese Dictionary

2. 工人们正在测量地基的高低，确保地面的水平误差在规定范围内。

   gōng​rén men zhèng​zài cè​liáng dì​jī de gāo​dī, què​bǎo dì​miàn de shuǐ​píng wù​chā zài guī​dìng fàn​wéi nèi.

   Workers are measuring the levels of the foundation to ensure the horizontal error of the ground is within the specified range.

   Source: Dong Chinese Dictionary