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 bounced up and down excitedly on the bed.
她兴奋地在床上蹦蹦跳跳。
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。
Soldiers were marching up and down outside the government buildings.
士兵在政府大楼外面来回练习队列行进。
The performers, in costume and makeup, were walking up and down backstage.
演员们穿着戏服化着妆，在后台走来走去。
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。
He immediately threw a tantrum, screaming and stomping up and down like a child.
他立刻发起脾气来，尖叫着，像孩子似的来回跺脚。
The waves were about five feet high now, and the bow of the boat was leaping up and down.
浪头现在约有五英尺高，船头上下颠簸。
She by herself got up and down her bed, walked to the bedroom door and opened it.
她一个人在床上爬上爬下，走到卧室门口，打开了门。
The escalator wafts us up and down every day.
自动扶梯天天送我们上上下下。
Peter's heart bobbed up and down as he listened.
彼得听着，心忽上忽下。
It slides up and down my heel when I walk around.
我一走动，它就在我的脚跟上下滑动。
Peter strode up and down, ordering finishing touches.
彼得踱来踱去，指挥做最后的修饰。
Users click the up and down arrows to make selections.
用户通过点击上移和下移箭头进行选择。
"Mr. Bullen gets up and begins to walk up and down again.
布伦先生起床，又开始来回走动。
My little brother likes to jump up and down like a monkey.
我的小弟弟喜欢像猴子一样跳上跳下。
Running up and down the strawberry rows will not be allowed.
不允许在草莓行间跑来跑去。
The kids beside me looked at me up and down and then laughed.
我旁边的孩子们上下打量着我，然后笑了起来。
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。
How do you get these hearts to move up and down and seemingly in random patterns?
你怎样才能让这些爱心看起来是在随机的模式中上下移动呢？
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。
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。
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