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 ...
The natural vegetation consisted of evergreen broad - leaved forest ever - green bushland, mangrove thickets and grassland.该地天然植被有常绿阔叶林 、 丛、树林、坡等....the thorn and bramble thickets.荆棘密布的灌木丛The delta region of the Rio Gran...