Solid, liquid, gas and … plasma_ - Michael Murillo 03:52 Secrets of the X chromosome - Robin Ball 05:07 Should we get rid of standardized testing_ - Arlo Kempf 05:41 Master the art of public speaking with TED Masterclass 01:41 Meet the tardigrade, the toughest animal on Earth...
When liquid water evaporates, it becomes water vapor and enters the atmosphere. This process is essential to kickstart the water cycle, a continuous movement of water on, above and below the surface of the Earth. Evaporation occurs when heat from the sun causes water from oceans, rivers, ...
the of and to a in that is was he for it with as his on be at by i this had not are but from or have an they which one you were all her she there would their we him been has when who will no more if out so up said what its about than into them can only other time new...
*| a room at the back of the house 房屋内靠後面的一个房间 *| a house with a garden at the back 有後花园的房屋 *|You can't cut with the back of the knife. 用刀背就无法切割. *| the back of one's hand, ie the side with the nails and the knuckles 手背. Cf 参看 front 1. ...