a warship that can operate both on and under water

sous-marin
a type of small vehicle that is used to travel on water

bateau
beneath the surface of a body of water

sous l'eau, sous-marin
to visit places one has never seen before

explorer
the great mass of salt water that covers most of the earth's surface

océan
the armed forces of a country

l'armée
a flat part of a bicycle or machine that is pushed with the foot to make it move or operate. It is typically circular and part of the mechanism that drives motion

pédale, pédalier
a machine that uses steam made from boiling water to produce power and make parts move

machine à vapeur, moteur à vapeur
a state of armed fighting between two or more groups, nations, or states

guerre
the war that took place from the year 1914 to 1918 between the allies and the central powers

Première Guerre mondiale
the war that took place from the year 1939 to 1945 between the axis and the allies

Seconde Guerre mondiale, Deuxième Guerre mondiale
to act violently against someone or something to try to harm them

attaquer
a country or its forces that one is fighting against in a war

ennemi, ennemie
a device that produces electricity; may have several primary or secondary cells arranged in parallel or series

pile électrique, batterie électrique
newly developed and incorporating new, modern methods or technology

perfectionné, avancé
a type of energy generated by splitting atoms to release their stored energy

énergie nucléaire, puissance nucléaire
to prevent someone or something from being damaged or harmed

protéger
someone whose job or education is about science

scientifique, savant, savante
the earth's surface where it is not under water

terre
to keep something in a particular place for later use, typically in a systematic or organized manner

garder
(plural) necessary things, such as food, medicines, clothes, etc. for a group of people

provisions
a deep, narrow, steep-sided depression on the ocean floor

fosse, fossé océanique
