翻译和例句：
.What to do:Rub (摩擦) the balloon against your dry hair. 3.Bringthe balloon close to the pepper.What will happen?Your answer: ________________________________why把气球先在头发上摩擦一会儿，然后把气球逐渐靠近胡椒粉。这时，胡椒 ……
(Q) Why do horses need shoes?(A) A horse needs shoes when it's walking on hard, flat1 ground. 这种马鞋不但防滑，还能减少马蹄和地面的摩擦。 A horse doesn't need shoes when it's walking on grass. ……
in size. They are more affected (影响) by surface forces, like friction (摩擦力) and wind, than by gravity ……
字母u发音/ʌ/ Gus runs in the mud (泥).Gus gets in the tub (澡盆).The tub has suds (泡沫).Gus rubs (摩擦) and rubs.Gus has a sub (潜水艇).A bug (昆虫) is in the sub.It is fun in the tub.Gus hugs (拥抱) the bug ……
friction n. 摩擦orbit n. 轨道graze v. slightly touch when passing 擦过naked eye: 肉眼faint adj. not bright 模糊的HELPstreak n. 条,道chunk n. 大块friction n. 摩擦orbit n. 轨道graze v. slightly touch when passing 擦过naked eye ……
. Tie the two balloons separately (分别地) to the two ends (末端) of the rope. 3. Rub (摩擦) the balloons... a cardboard between them, what will happen?Your answer: ____________________________________.Why?摩擦 ……
fall, although the inner side of the peel has some friction-reducing (降低摩擦的) properties. However... peel upon peel reduces static friction (静摩擦) – the force that keeps an object from moving when ……
there is no friction (摩擦力)! It’s greener because it uses less energy. The train can carry up...), according to China Daily. So there is no friction (摩擦力)! It’s greener because it uses less ……
Q: Why can a boiled egg spin (旋转) in a vertical (垂直的) position?A: American and Japanese scientists carried out an analysis of the forces at work on a spinning egg.They said that the friction (摩擦 ……
your palms (手掌).2. Wash palm to palm with your fingers crossed (手指交叉).3. Rub (摩擦) the back of your ……
lubrication；in surfaces用作状语，其中包含that引导的定语从句。句意为：摩擦学研究相互作用的表面间的摩擦以及通过添加润滑来减少表面间的摩擦。v Using ……
生虫的) mark was placed on their throats. When they saw the picture of themselves, they would rub (摩擦..., they would rub (摩擦) their throats to clean it off. But when they saw pictures of other fish, they didn’t rub ……
become red and soft when theyrub(摩擦) against each other.Heat(加热) the leaves up in a pot to make ……
动物的身体语言
the food and carry it back home.生词大本营 language 语言way 方式direction 方向tongue 舌头 giraffe 长颈鹿rub 摩擦friendship 友情... 方式direction 方向direction 方向tongue 舌头tongue 舌头giraffe 长颈鹿rub 摩擦friendship 友情antennae （复数）触角giraffe 长颈 ……
Jimmy 的小动作
大本营 flap 摆动（翅膀）cool （使）变凉 wag 摆动（尾巴）tap 轻敲 comfortable 舒适的beak 鸟喙 rub 摩擦get along with 与（某人）和睦...（尾巴）tap 轻敲tap 轻敲comfortable 舒适的beak 鸟喙comfortable 舒适的comfortable 舒适的beak 鸟喙beak 鸟喙rub 摩擦get along ……
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