bike[baɪk]n.

自行车;脚踏车;摩托车;

例句

Can I have a go on your new bike

现在分词biking过去式biked过去分词biked复数bikes第三人称单数bikes

back返回[bæk]

n.(人体或动物的)背部，背;腰背;脊柱;脊梁骨;后部;后面;末尾;（文件等的）背面;（书等的）最后几页，末尾;（椅子等的）靠背;（家具）…靠背的;后卫;