travel in

• If the light is traveling in the opposite direction, the reverse is true and the ray is bent away from the normal .
  如果光线沿着反方向行进，那末就有逆关系成立，即光线更远离法线而折射。
• Do you prefer travelling in spring or in autumn
  你喜欢春天旅游还是秋天旅游？
• We are planning to travel in france this winter
  我们正计划今年冬天去法国旅行
• He travels in carpets for a big london firm
  他为伦敦的一家大公司到处推销地毯
• It is known to all that light travels in straight lines
  众所周知，光以直线运行。
• There ' s so many magnetic waves traveling in the airspace
  有太多电磁波在空气中穿梭
• I picked up some french while travelling in paris
  在巴黎游览期间我学了几句法语。
• A preliminary research on xu xiake ' s travel in guangdong
  从历史文献论徐霞客游广东
• From january to march i was traveling in egypt
  从3月份到4月份期间，我在埃及旅游。
• One day , they travel in a group in the woods
  有一天，他们在树林中结伴而行。