ocean-floor map

基本解釋

Two key pieces of evidence -- the flight data and cockpit voice recorders -- remain missing and could lie on the ocean floor. Map of Flight 447's flight path ?
兩件關(guān)鍵証據(jù)——飛行數(shù)據(jù)和駕駛艙錄音器——仍未找到，可能已經(jīng)沉入海底。

Once there, they use aerial photography and remote cameras in combination with depth-finding and global-positioning satellite technology (as well as some first-hand testing of the waves) to measure the waves and map the contours of the ocean floor under the breaks.
ECONOMIST: On the beach
The Neil Armstrong, first of the Armstrong-class Auxiliary General Oceanographic Research (AGOR) ships, will be equipped with sonar to map the ocean floor and laboratories for experiments.
FORBES: U.S. Navy Names Ship After Neil Armstrong