| 释义 |
spread over- 覆盖，使遍布；包含：
to spread a white sheet over the bed 把白布单盖在床上 What he studied spread over many fields. 他所研究的内容涉及许多领域。 - 延伸至；延续到：
to spread over 6 months 延长六个月 One or two of the subjects she selected spread over into the following year. 她选修的一两门课程延续到第二年研习了。
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