Englishfor English speakers
staff
Noun
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The employees of a company.
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A long, straight stick that is mostly used to help people walk and is sometimes used in martial arts.
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A staff is five lines that music is written on.
staff
Verb
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When you staff a business, you provide them with employees.
development
Noun
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growth
The development of this story has been slow.
The organism has reached an important part in its development.
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Something which has developed
Our news team brings you the latest developments.
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A real estate development.
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Using new ideas for practical problems.
Our development department has created three new adhesives this year.
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The active placement of the pieces, or the process of doing it
White's development is good, but black's has been hampered by the pawn on e5.
officer
Noun
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An officer is a person in an army who has much authority. A general and a captain are two types of officers.
A soldier must obey his commanding officer.
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An officer is a policeman, often called a "police officer." (Note, "officer" is often better than "policeman" because the officer could be a woman or a man.)
Officer, can you help me, I've been robbed.
The thief was taken to jail by the officers.
He was arrested for hitting an officer.
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An officer is someone who holds office (meaning, has authority).
The judge is an important officer of the court.
She is the chief executive officer, or CEO, for our company.