最終更新日：2022/12/24
The dawn of the oil age was fairly recent. Although the stuff was used to waterproof boats in the Middle East 6,000 years ago, extracting it in earnest began only in 1859 after an oil strike in Pennsylvania. The first barrels of crude fetched $18 (around $450 at today’s prices). It was used to make kerosene, the main fuel for artificial lighting after overfishing led to a shortage of whale blubber.
編集履歴（0）
元となった例文
The
dawn
of
the
oil
age
was
fairly
recent.
Although
the
stuff
was
used
to
waterproof
boats
in
the
Middle
East
6,000
years
ago,
extracting
it
in
earnest
began
only
in
1859
after
an
oil
strike
in
Pennsylvania.
The
first
barrels
of
crude
fetched
$18
(around
$450
at
today’s
prices).
It
was
used
to
make
kerosene,
the
main
fuel
for
artificial
lighting
after
overfishing
led
to
a
shortage
of
whale
blubber.
