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

符流体动力学而有一层油脂它的硬壳完全防水。

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

这项流体动力学的发现也许有助于工程师们设计出尺寸可快速排水的蓄水池。

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、流线型的身体， 有助于减少水中的阻力，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.

就像鱼的侧线一样，这些扮演着水动力天线角色的传感器接收周围水流的信号。

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

它们长长的喙打破了水的表面张力，它们细长的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米以内的方，120英尺深的方，去记录生物体留下的流体力学的痕迹。

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.

你看他画的鸟、水或是流体力学，就会觉得那些是真的。

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.

来自船的巨大力量以如此快的速度在海洋中混乱翻腾，这有助于解释为什么船尾损坏如此严重，而流体的船头却干净利落划破水面，基本上完好无损。

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.

陆上的动物们， 像我可爱的狗狗珂润，可能会在泥或者沙上留下脚印，但海洋生物的脚印，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）具有更尖的流体动力学设计，使它们能够像刀切黄油一样切开水面，并与破冰船的摩擦尽可能小。