Blocknut
保险螺帽, 防松螺帽
🗣️ 情景例句
Thank you, you are a real credit to the car repair industry.
感谢你，你真的为汽车维修业增了光。
Don't halloo till you are out of the wood.
没有脱离危险不要先欢呼。
It was only possible for the Ombudsman to find this out by sending one of his representatives to check the facts.
司法特派员只有派他的代表去核对事实才能了解真相。