设备反复震动后,几颗螺丝已经松动,必须立即停机检查。Shèbèi fǎnfù zhèndòng hòu, jǐ kē luósī yǐjīng sōngdòng, bìxū lìjí tíngjī jiǎnchá.After the equipment repeatedly vibrated, several screws had already loosened, so it had to be stopped and checked immediately.
桌子腿松了,用螺丝刀拧紧螺丝就好了。Zhuōzi tuǐ sōng le, yòng luósīdāo nǐngjǐn luósī jiù hǎo le.The table leg is loose; just tighten the screws with a screwdriver.
他在地上找了半天,才找到掉了的螺丝。Tā zài dì shàng zhǎo le bàntiān, cái zhǎodào diào le de luósī.He searched the floor for ages before finding the screw that had dropped.