上有

• I think i have an abscess on my gums .
  我想我的牙床上有个脓疮。
• There is a floral border round the mouth of the vase .
  瓶口上有一道花边。
• The cam may have three, four or six lobes .
  该凸轮上有3个，4个或6个凸缘。
• The bond was signed jointly and severally .
  证书上有联名签字。
• They had seen no official harm in him .
  他们没有发现他在业务上有什么过失。
• There were several doors with brass knobs .
  那儿有好几扇门，门上有铜把手。
• There is an ink stain on your shirt .
  你的衬衫上有一个墨水斑。
• On the desk there was a bronze figure of plato .
  书桌上有一尊柏拉图的铜像。
• There are two middle schools in this little town ...
  这个小镇上有两所中学。
• There are dots of soot on the windowsill .
  窗台上有一点烟灰。