Do you get puffed out running up and down the stairs?
你会因为跑上跑下楼梯而气喘吁吁吗？
He jigged up and down with excitement.
他激动得又蹦又跳。
My relationship with him was up and down.
我跟他的关系忽冷忽热。
He kept bouncing up and down like a yo-yo.
他像个悠悠球似的蹦蹦跳跳。
Tiny boats bobbed up and down in the harbour.
小船在港湾中颠簸。
She walked up and down, flapping her arms to keep warm.
她来回走动，挥动着双臂使身体暖和起来。
I strolled up and down thoughtfully before calling a taxi.
叫出租车前,我若有所思地来回踱步。
People were parading up and down showing off their finest clothes.
人们走来走去，炫耀着他们最漂亮的服装。
Peter's heart bobbed up and down as he listened.
彼得听着，心忽上忽下。
The water buffalo squelched up and down the paddy fields, pulling the plough.
水牛拉着犁，在稻田里咕唧咕唧地走着。
It was lively both up and down the street.
街上到处都很热闹。
The structure of the backbone shows, however, that Ambulocetus swam like modern whales by moving the rear portion of its body up and down, even though a fluke was missing.
不过，走鲸的脊椎结构显示，即使没有尾片，它们在水中同样能够像现代鲸鱼那样通过身体后面部分的上下摆动来游动。
They lay sleeping under a tree, and snored so that the branches waved up and down.
他们正躺在一棵树下睡觉，鼾声大作，使得树枝上下摆动。
I looked up and down the corridor.
我来回扫视着走廊。
She bounced up and down excitedly on the bed.
她兴奋地在床上蹦蹦跳跳。
The boat rocked up and down in rhythm with the sea.
小船随着海浪起伏有致。
The children were jumping up and down with excitement.
孩子们兴奋得跳来跳去。
I found him in the corridor nervously pacing up and down.
我发现他在走廊里焦虑不安地走来走去。
This is a subject very dear to the hearts of academics up and down the country.
这是全国学者都极为重视的话题。
Then came steel strings, and that led to the lap guitar—which is also called the steel guitar because the player slides a steel rod up and down the neck.
然后出现了钢丝弦，接着膝上吉他就诞生了。膝上吉他也被称为钢吉他，因为演奏者会在琴颈上下滑动一个钢棒。
All through breakfast I kept jumping up and down, clapping my hands and laughing out loud.
在吃早餐的时候，我一直在那儿上窜下跳，不停地拍手和大笑。
All through breakfast I kept jumping up and down, clapping my hands and laughing out loud.
在吃早餐的时候，我一直在那儿上窜下跳，不停地拍手和大笑。
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