He had even at need contrived to aid and multiply the industries of other arrondissements.

在必要时,他还能帮助和发展其他县的工业.

At need one sees who his friend is.

患难见知交.

Academic library expand reference service, must be aimed at need of teaching and scientific research.

高校图书馆应根据学校教学和科研的需要，开展适合高校图书馆的参考咨询服务。