They were pretty basic, and the bulb socket was grounded to the metal base of the signal assembly, which was bolted through the plastic faring into the steel faring bracket.是什么意思_They were pretty basic, and the bulb socket was grounded to the metal base of the signal assembly, which was bolted through the plastic faring into the steel faring bracket.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句