牢牢láoláoTop 15000Meanings1. firmly2. safelyCharacters used牢prisonExamples2他tā牢牢láoláo地de抓住zhuāzhù了le她tā的de手臂shǒubì。He clutched her arm firmly.装置zhuāngzhì被bèi牢牢láoláo地de固定gùdìng在zài天花板tiānhuābǎn上shàng。The device is attached fast to the ceiling.