ān / zhuāng / luó / shuān / shí / bié / wàng / le / zài / luó / mǔ / xià / miàn / fàng / yí / gè / tán / huáng / diàn / quān安装螺栓时,别忘了在螺母下面放一个弹簧垫圈。When installing the bolt, remember to place a spring washer under the nut.