For learning English, you should know the number of English words. So post words with meaning and sentence to help others to improve English.
| Word | Meaning | Sentence | 
| Pledge | A serious or formal promise | I give you this ring as a pledge of my everlasting love for you. | 
| Disrupt | To prevent something, specially a system, process or event, | The heavy snow had disrupted the transport system. | 
| Ambition | A strong desire for success, achievement, power or wealth | He has already achieved the main ambition in life to become a wealthy. 
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You can get meaning and sentence from http://dictionary.cambridge.org
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