| 词汇 | professional development day |
| 释义 | professional development dayBrE /prəˌfeʃənl dɪˈveləpmənt deɪ/ NAmE /prəˌfeʃənl dɪˈveləpmənt deɪ/ noun (especiallyCanE ) a day on which classes at schools are cancelled so that teachers can get further training in their subjects 专职进修日，教师发展日（学校停课） |
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