Englishfor English speakers
flexible
Adjective
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When something is flexible, it can bend.
The thin wood stick was so flexible that it would bend but not break.
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By extension, the word is used as a metaphor. For example, when a person or thing is flexible, they can change.
Jim was very flexible and enjoyed every new experience when he travelled.
I think we can make working hours much more flexible.
They used to treat everyone the same but now take a more flexible approach.
arm
Noun
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One of the upper limbs people have; arms start at the shoulder and go down to the wrist, sometimes the hand is included.
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A weapon.
arm
Verb
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To give or sell weapons to a person, group, or country.
Our taxes pay to arm the military.
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To get a tool or a weapon ready for action; to activate.
Remember to arm the alarm system.
robot
Noun
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A robot is a machine that looks more or less a human being.
Starwars C-3PO is a golden robot.
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A robot can also be any man-made automatic device, resembling a human being or not.
When you ask for the time on a phone, a robot will answer you.
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A robot is a person who does not show emotions and seems to have no human thoughts.
He has the same expression whatever happens to him : he is a true robot.