人類だけが火の使い方を知っている。の英語

Only man knows how to use fire.

Making use of fire may be regarded as man's greatest invention.

Man would perish.

Human lives may be at stake.

I'll do anything in the interests of humanity.

Man is insatiably curious.

Mankind will succeed in making peaceful use of atomic energy.

Mankind will succeed in using nuclear energy peacefully.

The human race is dominant on earth.

modern man and extinct immediate ancestors of man

If a nuclear war were to break out, mankind would perish.

All humanity will suffer if a nuclear war breaks out.

Such an invention would be a boon to mankind.

The day will soon come when man can travel to Mars.

If there is a nuclear war, the human race will perish [be wiped out].

Is mankind still progressing?

I will labor in the cause of humanity.

I think saying that people should "save the earth" is the height of hubris.

Humans long ago left Earth to live on spaceships.

The day will soon come when man can travel to Mars.

Man should make peaceful use of technologies.

Early man migrated to all parts of the world.

During that time, a deadly virus has spread across the globe and killed off most of humanity.

Just when the first human beings will reach Mars remains to be seen.

inventions to bless mankind―to serve the cause of humanity

The invention is welcomed as―hailed as―a boon to humanity.

They started to fight to free humans from the machines' control.

Man in ancient times had to do almost everything for himself.

Humanity died this morning.

The invention is a great boon to mankind.