나선형의 외부 껍데기와 입 주변에 많은 촉수를 가진 두족류 연체동물.
A cephalopod mollusk with a light external spiral shell and numerous short tentacles around the mouth, known for its buoyant gas-filled shell.
예문:
"The nautilus is often called a living fossil because it has remained relatively unchanged for millions of years."
"Unlike other cephalopods like octopuses, the nautilus possesses a hard, chambered shell for protection."
"A nautilus adjusts its depth in the ocean by regulating the gas levels within its shell chambers."
1954년 미국 해군이 진수한 세계 최초의 원자력 잠수함의 명칭.
The name of the world's first nuclear-powered submarine, launched by the United States Navy in 1954.
예문:
"The USS Nautilus made history by becoming the first vessel to reach the geographic North Pole submerged."
"Engineers designed the Nautilus to stay underwater for much longer periods than conventional diesel-electric submarines."