We believe that a force of about one hundred pounds was needed to pull the string all the way back on a long bow.
我们认为，拉动长弓上的弓弦大约需要100磅的力。
I can measure that, because I pull it by one centimeter and I find the acceleration it exerts on a known mass.
我可以测量它了，因为我把它拉到了一厘米，我发现它对一个已知质量施加的加速度。
Then Houston, the control centre on the earth, called up and told me to use the tape to tape the bottom of the handrail and pull it off the telescope.
然后休斯顿，地球上的控制中心，打电话给我，让我用胶带把扶手的底部粘上，然后把它从望远镜上拉下来。
I relied on my instincts to pull me through.
我全靠本能闯了过来。
To help kids build stronger connections with others, you can pull the plug on TVs and computers.
为了督促孩子更多地与他人交往，你可以拔掉电视和电脑的插头。
Mexico has historically had high drop-out rates as poor families pull kids out of school to help put food on the table, and children often sell candy and crafts in the streets or work in restaurants.
历史上，墨西哥的辍学率一直很高，因为贫困家庭让孩子辍学，帮助解决温饱问题。孩子们经常在街上卖糖果和工艺品，或者在餐馆打工。
Max asked Sam to ride a bicycle to pull the board with Sophia and her harp on it.
马克斯让萨姆骑自行车拉着木板，上面载着索菲娅和她的竖琴。
I held on to that energy like a rope that could pull us to safety.
我紧紧抓住那股能量，就像抓住一根能把我们拉到安全地方的绳子。
Every plant on the disk had responded to the pull of gravity, and pointed its roots to the outside.
每一株盘子上的植物都能感受到重力的作用，根部都朝外面生长。
All the lifeguards on the bank should be required to pull together to stop kids swimming alone in the river.
岸上所有的救生员要齐心协力，防止孩子们单独在河里游泳。
And the trick to a puzzle box is there's a simple way to get out but you have to kind of pull on something, some special lever, to make it pop open.
这个谜笼的设计是这样的,只要小猫拉动一个东西,它就能够逃出去，拉动一个特殊的杠杆，迷笼就会打开。
Now I am going to pull on here and I'm going to increase the tension on the bottom one until one of the two breaks.
如果我像这样给它一个拉力，持续增大二号绳上的张力，直到两绳中的一根断裂。
It s an effect created by an electric field, that creates a singular pull on an atom and ultimately RIPS it apart.
它是由电场产生的效应，对原子进行单方面拉扯，最终撕裂。
The detection systemcould not press or squeeze the egg like the graders did, but what would happenif they could pull on the egg with a slight negative pressure, or vacuum?
检测系统不能像分级员一样按压或挤压鸡蛋。然而，如果它们能够用极小的负压或真空把鸡蛋牵引起来，结果会怎样呢？
As I talked about before, having a ton of friends on social networks is a major pull on your attention, and results in superficial relationships anyway.
正如我之前所说的，社交网络上拥有大量好友极大的分散了你的注意力，然而这些人却都是泛泛之交。
Dark matter is a form of stuff that does not interact with light, so cannot be seen, but makes its presence felt by exerting a gravitational pull on normal matter.
暗物质是一种不与光发生作用的物质，因而不可见。但是暗物质又是确实存在的，它与可见物质之间产生的引力效应证实了这一点。
Pull on the thread of truth and all sorts of things will start to unravel.
真相和所有类型事情的线索也即将开始逐渐拉开。
This common method in the planet-hunting world, called radial velocity, requires extremely precise measurements to detect a planet's gravitational pull on a nearby star.
这一行星寻找领域内的常见手段叫做径向速度法，需要极度精确的数据测量才能检测到行星对附近恒星的引力作用。
This is what it's like to work at the Foxconn factory: You enter a five- or six-story concrete building, pull on a plastic jacket and hat, and slip booties over your shoes.
富士康工厂中的工作环境就代表了最典型的情况：五六层楼的混凝土建筑，里面工作的工人们穿着塑料夹克和帽子，脚上套着靴子。
This is what it's like to work at the Foxconn factory: you enter a five - or six-story concrete building, pull on a plastic jacket and hat, and slip booties over your shoes.
富士康工厂中的工作环境就代表了最典型的情况：五六层楼的混凝土建筑，里面工作的工人们穿着塑料夹克和帽子，脚上套着靴子。
Rosie shrinks, crouching to pull on her shoes, head bowed, face concealed. Her Mum sighs.
妈妈声色俱厉道，罗西畏缩着，蹲下来穿鞋，她低着头，用手捂着脸。
Another factor is that most players gladly pull on the national shirt, especially for a World Cup.
另外一个原因是大部分的球员都很愿意披上国家队的战袍，尤其是出征世界杯。
Subtle differences in Titan's pull on Cassini suggest that the materials inside the moon are a mix of ice and rock with no clearly defined rocky layers.
泰坦星对卡西尼号牵引力的细微变化表明，该星球内部为冰和岩石的混合物，且没有明晰的岩石分界线。
You're dressing for a date and when you pull on your favorite jeans, you can no longer button them.
为了赶赴约会，你穿上自己最喜欢的牛仔裤，却发现扣不上。
Jed got his rope and tied it around the horses neck. He began to pull on the rope.
杰德拿出绳子，将它系到马的脖子上，开始拉绳。
It's an effect created by an electric field, that creates a singular pull on an atom and ultimately RIPS it apart.
它是由电场产生的效应，对原子进行单方面拉扯，最终撕裂。
It's an effect created by an electric field, that creates a singular pull on an atom and ultimately RIPS it apart.
它是由电场产生的效应，对原子进行单方面拉扯，最终撕裂。
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