Disconsolately, he walked back down the course.
他郁郁不乐地沿原路走回去了。
In 'come back', 'break down' and 'fall off', 'back', 'down' and 'off' are all adverbial particles.
在comeback、breakdown和falloff中，back、down和off都是副词小词。
If you do climb higher sooner, come back down to a lower height when you sleep.
如果你真的很快爬到了更高的地方，那就在你睡觉的时候回到较低的高度。
I looked back down at the skirts.
我回头看了看裙子。
As with Sisyphus, the boulder was painstakingly rolled upwards only to tumble back down again in an absurd exercise of futility.
和西西弗斯一样，巨石费力地向上滚动，结果又滚了下来，徒劳无功。
He ran back down the stairs with the map in his hand.
他手里拿着地图跑下楼梯。
The balloon moves back down from space until it falls down in the sea.
气球从太空返回，直到落在海里。
Li stopped for a moment."Wait. Sit back down. I think we need to talk some more."
李警官停顿了一下。“等会儿。坐回去。我想我们需要再谈谈。”
He could sneak them up the stairs then go back down to pay Grace and send her home.
他可以偷偷地把他们带到楼上，然后再下楼付钱给格蕾丝并把她送回家。
But then Europe slowed, and by 2008 the figure was back down to 83%.
但接着欧洲的速度放慢了。到2008年，该数据回到83%。
So what happens almost instantaneously after the collision, the electron up here falls back down.
所以在碰撞后，几乎同时，在这儿的电子又回去了。
The longer-term fear is that unemployment will drag the economy back down.
对失业将会把经济重新拉回衰退有着长期的恐惧。
And as existing businesses invest more capital, eventually more competition will drive profits back down.
而且随着现有企业投入更多资本，最终过强的竞争就会引致利润掉头向下。
The application server then ships the HTML back down to the client.
然后应用程序服务器再将HTML送回客户机。
Her hands blindly groped for the bars as she came back down.
她下来的时候，两手盲目地摸索双杠。
He kissed me softly and then sat back down.
他轻轻地吻了我然后坐下来。
I moved only my eyes, up to the ceiling above, and back down.
我只动了动眼睛，先向上看天花板，再向下。
There are some remarkable trails that meander off into the surrounding countryside or slope back down to the beach.
从一些值得注意的山径可以漫游到四周围的农村或回到海滩的斜坡。
In silence they walked back down the stairs. Hope and despair and fear tugged at them by turns.
静寂之中他们回身走下梯子，希望、绝望和恐惧轮番折磨着他们。
The light turned away, bobbed and swayed back down the logging road.
那短短的摇摆的光，纽转方向，顺着伐木路向下。
Yet, having vetoed him once, will the generals back down?
但是，已经否决过他一次的将军们这次会退让吗？
They nod their heads and guide you back out of the room and back down the corridors.
它们点头表示赞许，带你返回走出这个房间，回到走廊。
We hear her tread softly back down the stairs.
我们听到了女房东悄悄走下楼梯的声音。
Atmospheric gravity waves form when buoyancy pushes air up, and gravity pulls it back down.
当浮力把空气向上推，而重力又把它向下拉的时候，就会形成大气的重力波。
Hot rocks are shoved to the top, and erosion brings them back down the sides.
滚烫的熔岩冲上顶端，但是冰川的侵蚀又让它们退到一边去。
Sit back down and circle your shoulders backward, with your chin tucked, about 10 times.
坐下来让肩膀向后转，收下巴，同样动作重复做大约10次。
Go for a walk - outside is better, but up two flights of stairs and back down is good too.
散散步，如果能到外面就更好了，但如果能在两段台阶间做阶梯运动也能达到同样效果。
So I turned and headed back down the canyon.
所以我再次转回头，向峡谷口返回。
I'm noticing that whenever I slip back down to cellular level thinking, I get a good smackdown.
我注意到，每次我回到细胞层次去思考，我会得到狠狠的攻击。
I'm noticing that whenever I slip back down to cellular level thinking, I get a good smackdown.
我注意到，每次我回到细胞层次去思考，我会得到狠狠的攻击。
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