Last week a tennis ball hit me on the head, but I tried to ignore the pain, believing that it would go away sooner or later.
上周，一个网球击中了我的头，但我试图忽视疼痛，相信痛感迟早会消失的。
Chinese people like ball games very much, such as basketball, volleyball, soccer, table tennis and badminton.
中国人很喜欢球类运动，例如篮球、排球、足球、乒乓球、羽毛球。
—Jerry, can you play tennis? —Yes, I can. It's an easy ball game.
——杰瑞，你会打网球吗？ ——是的，我会。它是一项简单的球类运动。
There have been places to play ball games so far like tennis and basketball, but what about other sports, like skating and rollerblading?
到目前为止，已经有了玩如网球和篮球这样的球类运动的地方，但是对于其他运动，像是滑冰和轮滑而言呢？
Each "pebble" in a pebble-bed gas reactor is a graphite fuel sphere the size of a tennis ball.
在一个球形气体反应堆里的每一个“小球”都是一个网球大小的石墨燃料球。
A fuzzy tennis ball flies faster than a bald one for the same reason, Mr Bottaro explains.
毛茸茸的网球比表面光滑的球飞得快的原因正是这个原理，波塔罗解释说。
Dopamine receptors seem to track possibilities—an arcing tennis ball that may land in or out—and how expected or unexpected they are.
多巴胺受体有着跟踪潜力—网球的弧线球会落在界内还是界外—是怎样期待还是不期待他们的出现。
Filipino Rodolfo Rivera, 65, runs to hit arecycled tennis ball using a homemade wooden racket strapped to his handsduring a game of handball in Manila, Philippines, onSunday, January 23, 2011.
2011年1月23日，菲律宾首都马尼拉，一场手球比赛上，65岁的鲁道夫·里维拉正在用自制的球拍击打皮球。 这个球也是由废弃网球回收而来。
A recent study shows the negative impact that noise can have when one is attempting to predict where a tennis ball will land.
最近的一项研究显示了，当一个人试图预测网球落点的时候，噪音将对其有消极的影响。
I have here a tennis ball and I can bounce this tennis ball, I can throw it down.
我这里有个网球，要是把它对着地面扔，它会弹起来。
(Think of what would happen if you tried to slow down a skateboard with a tennis ball on it).
试想一下，你用网球使滑板减速是什么效果。
Not completely elastic, but not bad. A tennis ball--not completely elastic, but not bad.
不是完全弹性的，但不坏，一个网球,-不是完全弹性的，但不坏。
Or I see a chartreuse-yellow tennis ball on the lawn, pick it up and throw it.
否则我的目光会落到草坪上的淡黄绿色的网球上，捡起来，扔出去。
It's a chunk of brain matter "roughly equivalent to a tennis ball in size," McAuliffe says.
“这是一大块的脑浆大致相当于一个网球的大小。”麦考利夫说。
For hundreds of years eyewitnesses have reported brief encounters with the golf ball - to tennis ball-size orbs of electricity.
数百年来，目击者已经多次报道过，他们曾短暂相遇了大小约与高尔夫球到乒乓球相似的电魔法球。
Procedural memory is your memory for skills, such as how to hit a tennis ball. This doesn't take conscious thought.
程序性记忆是对技能的记录，比如如何打网球，这并不需要意识过程。
I may tell you something about the fun of chasing a tennis ball, or I may tell you something profound about myself or even life in general.
或许你可以从我这里知道追网球的乐趣，可以看透我内心深处，领悟到生命的真谛。
Use pillows to prop yourself on your side, or attach a tennis ball with a rubber band to the back of a T-shirt to keep from turning over on your back.
用枕头支撑着保持侧身躺，或者用橡皮筋在你体恤衫的后面系一个网球来防止你仰面躺着。
If I throw up a hammer, then the center of mass and only the center of mass will just go along a perfect parabola as if it were just a tennis ball.
我若是抛铁锤，那么质量重心，也是唯一的质量重心，会沿完美抛物线运动，就像一颗网球。
He can try his knuckles, the heel of one hand reinforced by pressure from the other hand on top of it, a tennis ball, or a back massager, using direct pressure or a firm circular motion.
他会尝试用指关节，用一只手掌根压在另一只手背上，网球，背部按摩器，采用直压按摩或圆周按摩。
If you have problems balancing the weight of your foot to the pedal, it helps to keep a halved tennis ball right under the accelerator pedal lever.
如果你难以平衡脚上的重量，在油门踏板下放半个网球将对你有所帮助。
You'll need a collar and a four - or six-foot lead to match the size of the dog. Also bring a tennis ball, a plush toy, and liver or chicken treats.
带一个项圈和一根四到六英尺的牵狗绳去选狗，同时也可以带上一个网球、一个玩具和一些狗食。
He observed somebody hit a tennis ball and wondered about the paths of projectiles.
他看到别人打网球就会思考网球的行进路线。
Try sewing a tennis ball into the back of your pyjama top. This will certainly stop you from sleeping on your back!
在你的睡衣后背那缝上一个网球，这样你就不会仰着睡啦。
The average size of modern humans - the Homo sapiens - has decreased about 10% during that period - from 1, 500 to 1, 359 cubic centimetres, the size of a tennis ball.
人类(智人)大脑的尺寸在过去的这段时间里减小了10%——从1500立方厘米减少到了1359立方厘米，减少的部分有一个网球那么大。
Projected on the window of the Ralph Lauren Madison Avenue store is a 67-inch image of items including polo shirts and tennis ball boy or ball girl uniforms.
在拉尔夫?劳伦麦迪逊大道时装店的橱窗上投射着一幅67英寸大的影像，上面有开领短袖式马球衬衫和男女网球球童装。
A tennis ball in class like this, then the whole trajectory is... the whole trajectory is in one plane in the vertical plane.
如果我抛出一个网球，这样，那么整个轨。，在一个平面上，一个垂直平面上。
The wall has an infinitely large mass, but the momentum of this tennis ball 2mv has changed by an amount 2 mv.
墙壁的质量无限大，但是网球的动量,改变了。
The tennis ball-style single stack of balls in a tight-fitting cylinder is the simplest;
网球式的单层包装将圆柱体塞满是最简单的；
The tennis ball-style single stack of balls in a tight-fitting cylinder is the simplest;
网球式的单层包装将圆柱体塞满是最简单的；
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