My father would burst into the kitchen bouncing a tennis ball.
我父亲会拍打着网球闯进厨房。
I spent many hours mindlessly banging a tennis ball against the wall.
我花了好多个小时单调地对着墙打网球。
He spent hours throwing a tennis ball against a wall.
他花了数小时对着一堵墙扔网球。
我这里有个网球。
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。
这是一个乒乓球。
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。
It's actually an advanced piece of robotics that won't fetch a tennis ball.
虽然它确实不会叼回抛出去的网球，但它可是一只先进的机器狗。
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。
I have also here a regular... well, it's not quite a tennis ball, but close enough.
这里有个规则的。，它接近于网球。
Suppose I take a tennis ball 100 and I throw up a tennis ball in 26.100.
比如，我拿了个网球,把它向上抛26。
(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。
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。
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。
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。
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。
The largest is the size of a tennis ball.
最大一块有一个网球那么大。
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。
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。
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。
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。
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。
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。
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。
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。
We have here a trajectory of a golf ball or a tennis ball in 26.100.
假设这是一条属于教室里,某高尔夫球或网球的运行轨迹。
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。
One landmark is Nintendo’s Wii games system, which is operated by replicating the movements we would make if playing for real: from firing a “gun, ” to whacking a “tennis ball” with a “racquet.”
一个里程碑似的系统是任天堂的wii游戏系统，它的操作与我们在现实中的操作一致：不论是开枪，还是用网球拍击球。
One landmark is Nintendo’s Wii games system, which is operated by replicating the movements we would make if playing for real: from firing a “gun, ” to whacking a “tennis ball” with a “racquet.”
一个里程碑似的系统是任天堂的wii游戏系统，它的操作与我们在现实中的操作一致：不论是开枪，还是用网球拍击球。
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