Fmvss
abbr. Federal Motor Vehicle Safety Standard 联邦摩托车辆安全标准
🗣️ 情景例句
After I finish my homeword, I usually watch TV for half an hour or so.
我做完作业后，通常看半个小时的电视。
He was anxious about his son's safety.
他担心他儿子的安全。
Letter
3第三封信