Must meet the strength requirements of V.E.S.C. regulation V-5 for Class 4 Hitch balls (with max. gross trailer weight of 6000 lbs.是什么意思_Must meet the strength requirements of V.E.S.C. regulation V-5 for Class 4 Hitch balls (with max. gross trailer weight of 6000 lbs.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句