Hydrodynamic and aligned with a layer of grease, the shell is completely waterproof.

符流体动力学而且附有一层油脂它硬防水。

This hydrodynamic finding could help engineers design systems that rapidly drain reservoirs, regardless of size.

这项流体动力学发现也许有助于工程师们设计出何尺寸可快速排水蓄水池。

This croc-relative had a sleek, streamlined body that helped reduce drag in the water, making it much more hydrodynamic.

这只鳄鱼亲戚拥有光滑、流线型身体， 有助于减少水中阻力，使其更具水动力。

Known as the “lateral line, ”these sensors apparently act like a hydrodynamic antenna, picking up signals about the flow of water around them.

就像鱼侧线一样，这些扮演着水动力天线角色传感器接收周围水流信号。

Their long beaks break the surface tension of the water and their slender bodies become  hydrodynamic once they hit the water.

它们长长喙打破了水表面张力，它们细长身体一旦接触到水面就会变成水动力。

And so a single scuba diver can go anywhere from the surface to 40 meters, or 120 feet deep, to measure the hydrodynamic signatures that organisms create.

这样潜水员就可以到达 水下40米以何地方，120英尺深何地方，去记录生物体留下流体力学痕迹。

One might say he could see birds and flight if you look at his drawings of birds, or if you look at his drawings of water and hydrodynamics.

你看他画鸟、水或是流体力学，就会觉得那些是真。

Massive forces from the ship chaotically whipping through the ocean at such speed help explain why the stern is so badly damaged while the hydrodynamic bow sliced cleanly through the water and remained largely intact.

来自船巨大力量以如此快速度在海洋中混乱地翻腾，这有助于解释为什么船尾损坏如此严重，而流体船头却干净利落地划破水面，基本上好无损。

And so terrestrial organisms, like my cute dog Kieran, might be leaving footprints behind in dirt or in sand, but marine organisms leave footprints in the form of what we call wake structures, or hydrodynamic signatures, in fluid.

陆地上动物们， 像我可爱狗狗珂润，可能会在泥地或者沙地上留下脚印，但海洋生物脚印，据其形态， 我们叫它尾流结构，或者水动力结构，这被包含于流体概念中。

If you noticed, other ships like cargo or passenger type vessels have more pointy and hydrodynamic designs that allow them to cut through the water like a knife through butter with as little friction as possible with ice breakers.

如果您注意到，其他船舶（例如货船或客船）具有更尖流体动力学设计，使它们能够像刀切黄油一样切开水面，并且与破冰船摩擦尽可能小。