Food and guns were difficult to find to keep the Confederate armies in the field.

VOA: special.2009.10.22

Self learners have also told us that they are OCW eager to come to OCW often in order to keep current and the latest thinking in their field.

自学者告诉我们,他们渴望每天经常浏览,以便查询他们领域的最新思想。

麻省理工公开课 - 媒体、教育、市场课程节选

The "sacred rays of chastity" are going to be emanating from the chaste maiden and protecting her like some magical force-field, and actually will keep her safe from the physical assaults of a savage bandit or a mountaineer.

贞节发出的神圣光芒“将要,从这贞节的修女身上发出并像某种神奇的力量一样保护她，而事实上还会保护她，使她不受来自,野蛮土匪或是登山者的身体袭击。

耶鲁公开课 - 弥尔顿课程节选