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。