最好先伸展一下僵硬的肌肉。It is better to stretch the tight muscles first.我被要求伸展手臂，收紧胸肌。I was required to hold out my arms and flex my pectorals.这块地从草木茂盛的狭长地带一直伸展开来。The land sweeps away from long areas of greenery....
滑滑板时带护肘和护膝是必要的.Elbow pads and knee pads are essential on a skateboard.不要在路上玩滑板或溜冰.Don't skateboard or roller skate on the road..滑板由操作台控制.The sledge was steered from a platform....
With their fleece sopping wet, they huddled in hollows, too dispirited to graze.在皮毛打湿的情况下, 他们挤在低洼处,靠近黑莓丛,或者躲在背风坡上, 毫无觅食的情绪.Mercury is covered in craters - hollows made by huge space rocks crashing into it.水星的表面有许多陨石坑,这些坑...