低收入的城乡地区的教师没有参加过数学竞赛，他们可能不知道有像 Math Counts 这样学习高数的机会。
Teachers in low-income urban and rural areas with no history of participating in math competitions may not know about advanced-math opportunities like Math Counts.
你可能有机会有意愿参加许多需要自愿者的工作，来扩大你的视野。
You may have opportunities to expand through volunteering for some of the many jobs that need volunteers.
如果你参加一个之前没有见过在场所有人的聚会活动或者是某项课程，今天你可能会有机会。
You may have this opportunity if you attend a gathering or function, or perhaps a course of some kind where you have not previously met everyone present.
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