bikeon Elementaryalso onCEFR Intermediate (B1)? 摩托车,脚踏车 biker biker(noun) 摩托车骑士,骑自行车的人 bikers bikers(noun) 摩托党,摩托车手,飞车党,骑士 bikes bikes(noun) 行车(bike的复数形式) biking biking(verb) 骑自行车(bike的现在分词形式) bike bike(noun) 摩托车,脚踏车 Forms nounverb biker biking bikers bikes bike