noun [C]
1 the hard central part of some fruits, such as apples, which contains the seeds:
Don't throw your apple core on the floor!
2 the centre of a planet:
The earth's core is a hot, molten mix of iron and nickel.
3 SPECIALIZED The core of a nuclear reactor (= a device in which atoms are changed to produce energy) is the place where fission (= splitting of atoms) happens.
4 SPECIALIZED a long thin cylindrical mass of material taken out of the earth for study
trung tam6
pragmatism
noun [U] MAINLY APPROVING
when you deal with a problem in a realistic way rather than obeying fixed theories, ideas or rules:
The council has operated much more effectively since pragmatism replaced political dogma.
chủ nghĩa thuc dụng
stark (BARE)
adjective
bare, simple or obvious, especially without decoration or anything which is not necessary; severe or extreme:
It was a stark room with its white walls, and a bed and chair as the only furniture.
The stark reality is that we are operating at a huge loss.
In the suburbs the spacious houses stand in stark contrast to the slums of the city's poor.
hoang vu,lanh lẽo
maintain (PRESERVE)
verb [T]
to keep a road, machine, building, etc. in good condition:
A large house costs a lot to maintain.
The roads around the town have been very poorly maintained.
duy trì,bảo wan
uncharted
adjective LITERARY
An uncharted place or situation is completely new and therefore has never been described before:
Nuclear fusion has taken physicists into uncharted seas/territory/waters (= a new and unknown area).
chưa thám hiểm
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