骑自行车...

He can't maintain enough equilibrium to ride a bike.他骑自行车不能保持平衡.He can ride a bike now, but he couldn't a few weeks ago.他现在能骑自行车了, 但几星期前他不会.Because I was old enough to ride a bike after I went to junior middle ...

ride a bike的音标：ride a bike的英式发音音标为：[raid ə baik]ride a bike的美式发音音标为：[raɪd e baɪk]...