青云翻译

Up and down stairs, for example, to queue Cycling slow to cross the road to pay attention to safety

For example, up and down the stairs to line up, riding a bike to go slow, crossing to safety

For example, about the staircase must line up, rides the bicycle to want the slow line, crosses the street to have to pay attention to the security

For example, you want to queue up and down the stairs, riding a bike, you want to slow down the road you want to pay attention to safety

For example, up and down the stairs to line up, riding a bike to go slow, crossing to safety