The boundary between physics and mathematics is not as clear-cut as we might think.
企业的角色是生产能够改善人们生活的产品和服务,同时使用更少的资源,并且要合法行事、保持诚信。
沙漠不仅仅是一个地方;它是一种心境,是想象力的广阔画布。