She bent down, picked up a rock, and threw it into the trees.
她弯下腰，拣起一块小石头，把它扔进树林里。
They set off at a jog up one street and down another.
他们跑步出发，沿着一条街跑过来又沿另外一条街跑过去。
We walked in silence up a flight of stairs and down a long corridor.
我们默默地走上一段楼梯，穿过一道长廊。
If a horse is lying down, it needs a long time to get up.
如果一匹马躺着，它需要很长时间才能站起来。
When you wave your arms up and down in a straight line，it means"yes"．
当你在一条直线上下挥动手臂时，它的意思是“是的”。
As a means of transportation, the river carried various vessels up and down its length.
作为一种运输工具，这条河上下运载着各种各样的船只。
Even running up and down the staircase can provide refreshment from a sedentary job.
即使是在楼梯上跑上跑下，也能给久坐的工作提神。
Warm your voice up before a show and warm it down after.
演出前润润嗓子，演出后放松嗓子。
He took up a bowl of water and gulped it down.
他端起一碗水，咕嘟咕嘟地喝了下去。
If you roll a ball up a slop, it will roll down again.
如果你把球滚上斜坡，它还会滚下来。
Bond spreads can go up, down, sideways or even resemble a bowl of spaghetti.
债券差价能上能下，能左能右，甚至与一碗意大利面条相似。
But a hungry heron flew down and swallowed him up for supper.
但是，一个饥饿的鹭飞下来，吞没了他吃晚饭。
His plane swooped a beautiful curve up and down.
他的飞机在上下翻飞时画出了一条美丽的曲线。
A good exercise for the heart is bending down and helping someone to get up.
弯下身子帮助他人站起来，这是对心灵很好的锻炼。
Bring a book or some schoolwork, sit down, and soak up the environment.
带一本书或是一些作业，坐下来，感受那里的氛围。
I started up a mountain as the sun was going down.
太阳渐渐西沉之时我开始上行驶向一座大山。
However, it is a good example of how to set up and tear down a stack frame.
不过它却是如何建立和销毁堆栈帧的一个很好的例子。
You may choose any item from a particular floor, or may choose to go up to the next floor, but you CANNOT go back down except to exit the building.
你可以在任何一层选择任意商品，你也可以选择登上下一层，但是，你不能往回走，除非你要离开商店。
They, too, are a good barometer of who is up and who is down.
这同样也是体现谁家得势谁家失意很好的晴雨表。
"Even if they put up a fence, they can take it down again one day in the future," he said hopefully.
“即使他们设置了栅栏，在未来的某天他们一定会去掉栅栏”，他充满信心的说。
There is something really relaxing about sitting down or curling up with a good book.
坐下来或者蜷缩着阅读好书真是一件放松的事。
The best way to avoid a major mess is to prepare to take your tree down before you even put it up.
避免产生大量垃圾的最好方法就是在立起圣诞树之前就作好拆下它的准备。
I was in real trouble last night: I had to type up a term paper to turn in to my English teacher this morning and my typewriter broke down.
他说：“昨晚我可真是碰到了大问题。”今天早上我必须把一篇论文交给英语老师，昨晚得用打字机打完的。
Lie down, warm up and send a message.
躺下，温暖一番并发个短信。
But he will see the value of his money or land go up and down like a see saw.
在这个过程中他只会看到他的钱或者土地升值或者贬值。
Bond yields are down, a bit, and activity is heating up, a bit.
债券收益率下降了一点点，而且市场活跃度也逐渐了增强一点点。
Melodies that are just running up and down a scale — neighboring tones.
级进旋律是指在整个音阶的，相邻音符上跑动的旋律。
She reached down, picked up a suitcase, and put it back in the van.
她弯下腰，拎起一个手提箱放回货车里。
She reached down, picked up a suitcase, and put it back in the van.
她弯下腰，拎起一个手提箱放回货车里。
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