They differ somewhat from bathymetric charts which are virtually topographic maps of the ocean floor . 它们与水深图稍有不同，后者实际上是洋底地形图。
The presence of dunes or antidunes in streams alternately decreases and increases the local depth . 河流中沙垄和逆行沙垄的存在，使局部水深交替地增大或减小。
Their marks on the lands are somewhat analogous to the dirt line on a tub showing the former depth of water . 它们在陆地上的标记有点像浴盆上表示原来水深的脏水线。
When i was almost gone and able to struggle no longer, i found myself within my depth; and by this time the storm was much abated . 当我再也挣扎不下去，快要完蛋时，我觉得水深已经不能灭顶了，这时风暴也大大减弱。
Prepare spud plate and wireline to check water depth 准备测深板和钢丝绳测量水深
If you can ' t swim , don ' t get out of your depth 不会游泳就不要到水深没顶的地方去
If you can ' t swim , don ' t get out of your depth 不会游泳就不要到水深没顶的地方去
He knows the water the best who has waded through it 要知水深浅,须问过河人
Mr calamy , the iead , if you please 卡拉米先生，可以的话，用铅锤测一下水深
A 2d numerical model for part depth homogeneous mixing 部分水深平均二维计算模型的研究
