安全绳必须牢牢固定在主梁上,否则再昂贵的设备也毫无意义。Ānquánshéng bìxū láoláo gùdìng zài zhǔliáng shang, fǒuzé zài ángguì de shèbèi yě háo wú yìyì.The safety rope must be firmly fixed to the main beam; otherwise even the most expensive equipment is meaningless.
孩子牢牢抓住妈妈的手,不肯松开。Háizi láoláo zhuā zhù māma de shǒu, bù kěn sōngkāi.The child held Mum's hand tightly and wouldn't let go.
风很大,他牢牢地抓着帽子。Fēng hěn dà, tā láoláo de zhuā zhe màozi.The wind was strong, and he held his hat on tightly.