seabed [ˈsiˌbɛd]

例句:

• Earth movements in the past elevated great areas of the seabed.
  过去地球的运动把大片的海床升高了。
  来自《权威词典》
• The cylinder was lifted from the seabed in a sling.
  圆筒用吊索吊离海底.
  
• Under the seabed there are many submerged reefs.
  海底下有许多暗礁.
  
• Others - unknown - explode from the seabed like volcanoes.
  来自BBC
• They are on the bottom of the seabed and you can imagine.
  来自VOA
• Delicately clasping a finger of coral on the seabed is his quarry.
  来自THETIMES