摘要：根据英文释义写出下列单词: cater campaign candidate cancel casual calculate clarify coincidence cautious challenge 1) to find out how much sth. will cost, how long sth will take etc, by using numbers 2) a planned set of activities carried out to achieve a certain goal 3) to end an agreement or arrangement that you have with someone 4) someone who is being considered for a job or is competing in an election 5) relaxed and not worried, or seeming not to care about something 6) to provide a particular group of people with the things they need or want 7) careful to avoid danger or risks 8) something that tests strength, skill, or ability, especially in a way that is interesting 9) to make something clearer or easier to understand 10) when two things happen at the same time, in the same place, or to the same people in a way that seems surprising or unusual

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