龙骨: a bird's sternum fossil frag ...下水: offal深: deep龙骨下富余水深: keel clearance富裕水深龙骨下富裕水深: under keel clearance龙骨下的: underkeel地下水深度: ground water depth下水深度: navigable depth for lunching水深: depth of water◇水深计 water gage; 水深图 fathogram; bathygram; 水深仪 fathometer龙骨: 1.(鸟类的胸骨) a bird's sternum2.[中药] fossil fragments3.(船只、飞机、建筑物等的支撑和承重结构) keel◇龙骨板 keel plate; 龙骨底板 shoe; 龙骨木 rising wood; 龙骨线 keel-line; 龙骨线脚 [建筑] keel molding; 龙骨翼板 garboard; garboard strake下水: 下水1.(进入水中) enter the water; be launched: (使)船下水 launch a ship; 一艘新战舰从船坞下水。 a new battleship was launched from a shipyard.2.(做坏事) take to evildoing; fall into evil ways 拖人下水 involve sb. in evildoing; entice [inveigle] sb. into evildoing3.(向下游航行的) downriver; downstream 下水船 downriver boat; 下水典礼 launching ceremony; 下水滑道 launching ways; slipway; bilgeway 骨下袋: tortuous pocket假龙骨 龙骨板: falsekeel报水深: calling the soundings吃水;水深: draft (draught)上水深: headwater depth水深表: diver’s wrist depth gauge水深测: ft sounding水深尺: hydro-barometer水深的: bathometric; bathymetrical; deepwater水深点: soundings水深计: fathometer; fathomether水深图: bathygram; bathymetric charts; bathymetric map; bathymetrical chart; depth chart水深线: underwater contour; water depth line水深仪: fathometer