3 sentences for 牢 (láo — firm)

1. 这台机器安装得很牢。

   zhè tái jī​qì ān​zhuāng de hěn láo.

   This machine is installed very securely.

   Source: Dong Chinese Dictionary

2. 你必须把虾握牢。

   nǐ bì​xū bǎ xiā wò láo.

   You must hold the shrimp firmly.

   Source: OpenSubtitles

3. 由于地基不牢，这根电线杆向右倾斜了。

   yóu​yú dì​jī bù láo, zhè gēn diàn​xiàn​gān xiàng yòu qīng​xié le.

   Due to a weak foundation, this utility pole has tilted to the right.

   Source: Dong Chinese Dictionary