This is RoboBee. It is not a bee. It is the smallest flying robot in the world. It’s as big as a 1-jiao coin....

Sandy bed cannot keep its original smoothness as the flows pass. With the increase of the flow intensity, the bed forms ......

春节前后，各地都进入了最寒冷的阶段，也就是人们常说的“数九寒天”。大家可要记得添衣保暖以免感冒哦。今天我们来学习一下有关天气......

escape 逃掉了!　　v. n. 逃避，逃脱，避免　　There is not the smallest chance of his escape. 　　他一点逃走的机会也没有。　　......

Mini Monkey　　　　The Philippine Tarsiers are very small. So some people also call them mini monkeys.　　They are one o......

<正>Introduction Pterosaurs exhibit a large size range with the smallest approximately the size of a sparrow and the lar......

“I want to be a teacher，” said Sarah one day.　　“That is great，” said her mother. “You will be a good teacher.”　　......

The alkali metal lithium(Li)has the smallest density and the most negative Redox potential[1].It is considered as one of......