They found that the clam first contracts its shell.

他子首先会收缩自己的外壳。

Fried razor clams with black beans, pork knuckle, typhoon shelter crab.

豉椒炒子、猪手、避风塘炒蟹。

These talents intrigued MIT researchers, who thought that a robotic version of the clam would have practical uses.

这一出众的才能引了麻省研究人员的兴趣，他认为如果研制出机器版本的子，以实际大作为。

The drag on the burrowing clam is dramatically reduced and it starts to really move.

这样就明显减少挖掘中子所受到的阻力以真正实向前移动。

They believe that an energy-efficient Roboclam could anchor an autonomous underwater vehicle, search for mines or lay underwater cables.

他认为这样一种有效利用能量的机器子以用于固定寻找矿藏或安放于海底电缆之类的自动设备。

But the razor clam could burrow a centimeter per second and go half a kilometer using only about a AA battery's worth of energy.

但是这种子能够以每秒1厘米的速度只消耗相当于一节AA号电池的能量就以挖掘半公里的深度。